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Finding the Fourth Proportional to 6,141.60, 8,491.20 and 5,354.40

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Solution

The fourth proportional to 6,141.60, 8,491.20 and 5,354.40 is: 7,402.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,141.60 : 8,491.20 = 5,354.40 : x
  2. Step 2: Convert to fraction form
    6,141.60/8,491.20 = 5,354.40/x
  3. Step 3: Cross multiply
    6,141.60x = 8,491.20 × 5,354.40
  4. Step 4: Simplify right side
    6,141.60x = 45,465,281.28
  5. Step 5: Solve for x
    x = 45,465,281.28/6,141.60
  6. Step 6: Final answer
    x = 7,402.84

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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.