Home / 1,715.10-2,366.82-929.15

Finding the Fourth Proportional to 1,715.10, 2,366.82 and 929.15

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Solution

The fourth proportional to 1,715.10, 2,366.82 and 929.15 is: 1,282.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,715.10 : 2,366.82 = 929.15 : x
  2. Step 2: Convert to fraction form
    1,715.10/2,366.82 = 929.15/x
  3. Step 3: Cross multiply
    1,715.10x = 2,366.82 × 929.15
  4. Step 4: Simplify right side
    1,715.10x = 2,199,118.97
  5. Step 5: Solve for x
    x = 2,199,118.97/1,715.10
  6. Step 6: Final answer
    x = 1,282.21

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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.