Home / 9,340.66-12,890.16-5,148.88

Finding the Fourth Proportional to 9,340.66, 12,890.16 and 5,148.88

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Solution

The fourth proportional to 9,340.66, 12,890.16 and 5,148.88 is: 7,105.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,340.66 : 12,890.16 = 5,148.88 : x
  2. Step 2: Convert to fraction form
    9,340.66/12,890.16 = 5,148.88/x
  3. Step 3: Cross multiply
    9,340.66x = 12,890.16 × 5,148.88
  4. Step 4: Simplify right side
    9,340.66x = 66,369,887.02
  5. Step 5: Solve for x
    x = 66,369,887.02/9,340.66
  6. Step 6: Final answer
    x = 7,105.48

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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.