Home / 1,688.76-2,332.26-1,505.52

Finding the Fourth Proportional to 1,688.76, 2,332.26 and 1,505.52

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Solution

The fourth proportional to 1,688.76, 2,332.26 and 1,505.52 is: 2,079.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688.76 : 2,332.26 = 1,505.52 : x
  2. Step 2: Convert to fraction form
    1,688.76/2,332.26 = 1,505.52/x
  3. Step 3: Cross multiply
    1,688.76x = 2,332.26 × 1,505.52
  4. Step 4: Simplify right side
    1,688.76x = 3,511,264.08
  5. Step 5: Solve for x
    x = 3,511,264.08/1,688.76
  6. Step 6: Final answer
    x = 2,079.20

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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.