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Finding the Fourth Proportional to 1,715.69, 2,365.13 and 1,479.17

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Solution

The fourth proportional to 1,715.69, 2,365.13 and 1,479.17 is: 2,039.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,715.69 : 2,365.13 = 1,479.17 : x
  2. Step 2: Convert to fraction form
    1,715.69/2,365.13 = 1,479.17/x
  3. Step 3: Cross multiply
    1,715.69x = 2,365.13 × 1,479.17
  4. Step 4: Simplify right side
    1,715.69x = 3,498,421.95
  5. Step 5: Solve for x
    x = 3,498,421.95/1,715.69
  6. Step 6: Final answer
    x = 2,039.08

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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.