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Finding the Fourth Proportional to 7,567.40, 11,348.40 and 3,123.20

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Solution

The fourth proportional to 7,567.40, 11,348.40 and 3,123.20 is: 4,683.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,567.40 : 11,348.40 = 3,123.20 : x
  2. Step 2: Convert to fraction form
    7,567.40/11,348.40 = 3,123.20/x
  3. Step 3: Cross multiply
    7,567.40x = 11,348.40 × 3,123.20
  4. Step 4: Simplify right side
    7,567.40x = 35,443,322.88
  5. Step 5: Solve for x
    x = 35,443,322.88/7,567.40
  6. Step 6: Final answer
    x = 4,683.69

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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.