Home / 9,389.60-12,957.48-5,140.56

Finding the Fourth Proportional to 9,389.60, 12,957.48 and 5,140.56

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Solution

The fourth proportional to 9,389.60, 12,957.48 and 5,140.56 is: 7,093.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,389.60 : 12,957.48 = 5,140.56 : x
  2. Step 2: Convert to fraction form
    9,389.60/12,957.48 = 5,140.56/x
  3. Step 3: Cross multiply
    9,389.60x = 12,957.48 × 5,140.56
  4. Step 4: Simplify right side
    9,389.60x = 66,608,703.39
  5. Step 5: Solve for x
    x = 66,608,703.39/9,389.60
  6. Step 6: Final answer
    x = 7,093.88

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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.