Home / 7,675.40-11,513.10-4,905.20

Finding the Fourth Proportional to 7,675.40, 11,513.10 and 4,905.20

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Solution

The fourth proportional to 7,675.40, 11,513.10 and 4,905.20 is: 7,357.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,675.40 : 11,513.10 = 4,905.20 : x
  2. Step 2: Convert to fraction form
    7,675.40/11,513.10 = 4,905.20/x
  3. Step 3: Cross multiply
    7,675.40x = 11,513.10 × 4,905.20
  4. Step 4: Simplify right side
    7,675.40x = 56,474,058.12
  5. Step 5: Solve for x
    x = 56,474,058.12/7,675.40
  6. Step 6: Final answer
    x = 7,357.80

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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.