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Finding the Fourth Proportional to 9,458.40, 14,187.60 and 7,903.20

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Solution

The fourth proportional to 9,458.40, 14,187.60 and 7,903.20 is: 11,854.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,458.40 : 14,187.60 = 7,903.20 : x
  2. Step 2: Convert to fraction form
    9,458.40/14,187.60 = 7,903.20/x
  3. Step 3: Cross multiply
    9,458.40x = 14,187.60 × 7,903.20
  4. Step 4: Simplify right side
    9,458.40x = 112,127,440.32
  5. Step 5: Solve for x
    x = 112,127,440.32/9,458.40
  6. Step 6: Final answer
    x = 11,854.80

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.