Home / 9,339.04-12,887.10-5,147.28

Finding the Fourth Proportional to 9,339.04, 12,887.10 and 5,147.28

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Solution

The fourth proportional to 9,339.04, 12,887.10 and 5,147.28 is: 7,102.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,339.04 : 12,887.10 = 5,147.28 : x
  2. Step 2: Convert to fraction form
    9,339.04/12,887.10 = 5,147.28/x
  3. Step 3: Cross multiply
    9,339.04x = 12,887.10 × 5,147.28
  4. Step 4: Simplify right side
    9,339.04x = 66,333,512.09
  5. Step 5: Solve for x
    x = 66,333,512.09/9,339.04
  6. Step 6: Final answer
    x = 7,102.82

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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.