Home / 5,128.38-7,652.31-4,814.91

Finding the Fourth Proportional to 5,128.38, 7,652.31 and 4,814.91

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Solution

The fourth proportional to 5,128.38, 7,652.31 and 4,814.91 is: 7,184.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.38 : 7,652.31 = 4,814.91 : x
  2. Step 2: Convert to fraction form
    5,128.38/7,652.31 = 4,814.91/x
  3. Step 3: Cross multiply
    5,128.38x = 7,652.31 × 4,814.91
  4. Step 4: Simplify right side
    5,128.38x = 36,845,145.68
  5. Step 5: Solve for x
    x = 36,845,145.68/5,128.38
  6. Step 6: Final answer
    x = 7,184.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.