Home / 9,355.52-12,911.27-5,376.40

Finding the Fourth Proportional to 9,355.52, 12,911.27 and 5,376.40

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Solution

The fourth proportional to 9,355.52, 12,911.27 and 5,376.40 is: 7,419.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,355.52 : 12,911.27 = 5,376.40 : x
  2. Step 2: Convert to fraction form
    9,355.52/12,911.27 = 5,376.40/x
  3. Step 3: Cross multiply
    9,355.52x = 12,911.27 × 5,376.40
  4. Step 4: Simplify right side
    9,355.52x = 69,416,092.87
  5. Step 5: Solve for x
    x = 69,416,092.87/9,355.52
  6. Step 6: Final answer
    x = 7,419.80

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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.