Home / 1,511.20-2,085.47-848.13

Finding the Fourth Proportional to 1,511.20, 2,085.47 and 848.13

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Solution

The fourth proportional to 1,511.20, 2,085.47 and 848.13 is: 1,170.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,511.20 : 2,085.47 = 848.13 : x
  2. Step 2: Convert to fraction form
    1,511.20/2,085.47 = 848.13/x
  3. Step 3: Cross multiply
    1,511.20x = 2,085.47 × 848.13
  4. Step 4: Simplify right side
    1,511.20x = 1,768,749.67
  5. Step 5: Solve for x
    x = 1,768,749.67/1,511.20
  6. Step 6: Final answer
    x = 1,170.43

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Double scale
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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.