Home / 9,330.56-12,876.48-5,139.20

Finding the Fourth Proportional to 9,330.56, 12,876.48 and 5,139.20

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Solution

The fourth proportional to 9,330.56, 12,876.48 and 5,139.20 is: 7,092.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,330.56 : 12,876.48 = 5,139.20 : x
  2. Step 2: Convert to fraction form
    9,330.56/12,876.48 = 5,139.20/x
  3. Step 3: Cross multiply
    9,330.56x = 12,876.48 × 5,139.20
  4. Step 4: Simplify right side
    9,330.56x = 66,174,806.02
  5. Step 5: Solve for x
    x = 66,174,806.02/9,330.56
  6. Step 6: Final answer
    x = 7,092.27

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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.