Home / 8,909.19-12,285.68-5,370.30

Finding the Fourth Proportional to 8,909.19, 12,285.68 and 5,370.30

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Solution

The fourth proportional to 8,909.19, 12,285.68 and 5,370.30 is: 7,405.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,909.19 : 12,285.68 = 5,370.30 : x
  2. Step 2: Convert to fraction form
    8,909.19/12,285.68 = 5,370.30/x
  3. Step 3: Cross multiply
    8,909.19x = 12,285.68 × 5,370.30
  4. Step 4: Simplify right side
    8,909.19x = 65,977,760.45
  5. Step 5: Solve for x
    x = 65,977,760.45/8,909.19
  6. Step 6: Final answer
    x = 7,405.58

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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.