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Finding the Fourth Proportional to 6,358.80, 9,511.20 and 5,705.40

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Solution

The fourth proportional to 6,358.80, 9,511.20 and 5,705.40 is: 8,533.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,358.80 : 9,511.20 = 5,705.40 : x
  2. Step 2: Convert to fraction form
    6,358.80/9,511.20 = 5,705.40/x
  3. Step 3: Cross multiply
    6,358.80x = 9,511.20 × 5,705.40
  4. Step 4: Simplify right side
    6,358.80x = 54,265,200.48
  5. Step 5: Solve for x
    x = 54,265,200.48/6,358.80
  6. Step 6: Final answer
    x = 8,533.87

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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.