Home / 9,390.35-12,944.85-7,148.31

Finding the Fourth Proportional to 9,390.35, 12,944.85 and 7,148.31

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Solution

The fourth proportional to 9,390.35, 12,944.85 and 7,148.31 is: 9,854.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,390.35 : 12,944.85 = 7,148.31 : x
  2. Step 2: Convert to fraction form
    9,390.35/12,944.85 = 7,148.31/x
  3. Step 3: Cross multiply
    9,390.35x = 12,944.85 × 7,148.31
  4. Step 4: Simplify right side
    9,390.35x = 92,533,800.70
  5. Step 5: Solve for x
    x = 92,533,800.70/9,390.35
  6. Step 6: Final answer
    x = 9,854.14

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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.