Home / 9,104.40-12,562.20-5,378.40

Finding the Fourth Proportional to 9,104.40, 12,562.20 and 5,378.40

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Solution

The fourth proportional to 9,104.40, 12,562.20 and 5,378.40 is: 7,421.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,104.40 : 12,562.20 = 5,378.40 : x
  2. Step 2: Convert to fraction form
    9,104.40/12,562.20 = 5,378.40/x
  3. Step 3: Cross multiply
    9,104.40x = 12,562.20 × 5,378.40
  4. Step 4: Simplify right side
    9,104.40x = 67,564,536.48
  5. Step 5: Solve for x
    x = 67,564,536.48/9,104.40
  6. Step 6: Final answer
    x = 7,421.09

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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.