Home / 9,261.32-12,778.08-5,280.98

Finding the Fourth Proportional to 9,261.32, 12,778.08 and 5,280.98

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Solution

The fourth proportional to 9,261.32, 12,778.08 and 5,280.98 is: 7,286.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,261.32 : 12,778.08 = 5,280.98 : x
  2. Step 2: Convert to fraction form
    9,261.32/12,778.08 = 5,280.98/x
  3. Step 3: Cross multiply
    9,261.32x = 12,778.08 × 5,280.98
  4. Step 4: Simplify right side
    9,261.32x = 67,480,721.03
  5. Step 5: Solve for x
    x = 67,480,721.03/9,261.32
  6. Step 6: Final answer
    x = 7,286.30

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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.