Home / 9,385.20-12,952.80-5,406.48

Finding the Fourth Proportional to 9,385.20, 12,952.80 and 5,406.48

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Solution

The fourth proportional to 9,385.20, 12,952.80 and 5,406.48 is: 7,461.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,385.20 : 12,952.80 = 5,406.48 : x
  2. Step 2: Convert to fraction form
    9,385.20/12,952.80 = 5,406.48/x
  3. Step 3: Cross multiply
    9,385.20x = 12,952.80 × 5,406.48
  4. Step 4: Simplify right side
    9,385.20x = 70,029,054.14
  5. Step 5: Solve for x
    x = 70,029,054.14/9,385.20
  6. Step 6: Final answer
    x = 7,461.65

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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.