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Finding the Fourth Proportional to 1,510.99, 2,085.14 and 847.73

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Solution

The fourth proportional to 1,510.99, 2,085.14 and 847.73 is: 1,169.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,510.99 : 2,085.14 = 847.73 : x
  2. Step 2: Convert to fraction form
    1,510.99/2,085.14 = 847.73/x
  3. Step 3: Cross multiply
    1,510.99x = 2,085.14 × 847.73
  4. Step 4: Simplify right side
    1,510.99x = 1,767,643.06
  5. Step 5: Solve for x
    x = 1,767,643.06/1,510.99
  6. Step 6: Final answer
    x = 1,169.86

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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.