Home / 9,339.52-12,888.54-5,147.77

Finding the Fourth Proportional to 9,339.52, 12,888.54 and 5,147.77

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Solution

The fourth proportional to 9,339.52, 12,888.54 and 5,147.77 is: 7,103.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,339.52 : 12,888.54 = 5,147.77 : x
  2. Step 2: Convert to fraction form
    9,339.52/12,888.54 = 5,147.77/x
  3. Step 3: Cross multiply
    9,339.52x = 12,888.54 × 5,147.77
  4. Step 4: Simplify right side
    9,339.52x = 66,347,239.56
  5. Step 5: Solve for x
    x = 66,347,239.56/9,339.52
  6. Step 6: Final answer
    x = 7,103.92

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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.