Home / 1,715.68-2,570.16-1,329.76

Finding the Fourth Proportional to 1,715.68, 2,570.16 and 1,329.76

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Solution

The fourth proportional to 1,715.68, 2,570.16 and 1,329.76 is: 1,992.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,715.68 : 2,570.16 = 1,329.76 : x
  2. Step 2: Convert to fraction form
    1,715.68/2,570.16 = 1,329.76/x
  3. Step 3: Cross multiply
    1,715.68x = 2,570.16 × 1,329.76
  4. Step 4: Simplify right side
    1,715.68x = 3,417,695.96
  5. Step 5: Solve for x
    x = 3,417,695.96/1,715.68
  6. Step 6: Final answer
    x = 1,992.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.