Home / 1,516.40-2,273.92-695.20

Finding the Fourth Proportional to 1,516.40, 2,273.92 and 695.20

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Solution

The fourth proportional to 1,516.40, 2,273.92 and 695.20 is: 1,042.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,516.40 : 2,273.92 = 695.20 : x
  2. Step 2: Convert to fraction form
    1,516.40/2,273.92 = 695.20/x
  3. Step 3: Cross multiply
    1,516.40x = 2,273.92 × 695.20
  4. Step 4: Simplify right side
    1,516.40x = 1,580,829.18
  5. Step 5: Solve for x
    x = 1,580,829.18/1,516.40
  6. Step 6: Final answer
    x = 1,042.49

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1.5x scale

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.