Home / 5,130.38-7,655.30-4,816.90

Finding the Fourth Proportional to 5,130.38, 7,655.30 and 4,816.90

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Solution

The fourth proportional to 5,130.38, 7,655.30 and 4,816.90 is: 7,187.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,130.38 : 7,655.30 = 4,816.90 : x
  2. Step 2: Convert to fraction form
    5,130.38/7,655.30 = 4,816.90/x
  3. Step 3: Cross multiply
    5,130.38x = 7,655.30 × 4,816.90
  4. Step 4: Simplify right side
    5,130.38x = 36,874,814.57
  5. Step 5: Solve for x
    x = 36,874,814.57/5,130.38
  6. Step 6: Final answer
    x = 7,187.54

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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.