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Finding the Fourth Proportional to 5,320.54, 7,331.88 and 5,189.32

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Solution

The fourth proportional to 5,320.54, 7,331.88 and 5,189.32 is: 7,151.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,320.54 : 7,331.88 = 5,189.32 : x
  2. Step 2: Convert to fraction form
    5,320.54/7,331.88 = 5,189.32/x
  3. Step 3: Cross multiply
    5,320.54x = 7,331.88 × 5,189.32
  4. Step 4: Simplify right side
    5,320.54x = 38,047,471.52
  5. Step 5: Solve for x
    x = 38,047,471.52/5,320.54
  6. Step 6: Final answer
    x = 7,151.05

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1.5x scale

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.