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Finding the Fourth Proportional to 1,510.76, 2,085.14 and 881.36

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Solution

The fourth proportional to 1,510.76, 2,085.14 and 881.36 is: 1,216.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,510.76 : 2,085.14 = 881.36 : x
  2. Step 2: Convert to fraction form
    1,510.76/2,085.14 = 881.36/x
  3. Step 3: Cross multiply
    1,510.76x = 2,085.14 × 881.36
  4. Step 4: Simplify right side
    1,510.76x = 1,837,758.99
  5. Step 5: Solve for x
    x = 1,837,758.99/1,510.76
  6. Step 6: Final answer
    x = 1,216.45

Related Problems

Find fourth proportional to 755.38, 1,042.57 and 440.68
Half scale
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Double scale
Find fourth proportional to 1,511.76, 2,086.52 and 882.36
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.