Home / 9,259.55-12,778.91-5,280.58

Finding the Fourth Proportional to 9,259.55, 12,778.91 and 5,280.58

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Solution

The fourth proportional to 9,259.55, 12,778.91 and 5,280.58 is: 7,287.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,259.55 : 12,778.91 = 5,280.58 : x
  2. Step 2: Convert to fraction form
    9,259.55/12,778.91 = 5,280.58/x
  3. Step 3: Cross multiply
    9,259.55x = 12,778.91 × 5,280.58
  4. Step 4: Simplify right side
    9,259.55x = 67,480,077.67
  5. Step 5: Solve for x
    x = 67,480,077.67/9,259.55
  6. Step 6: Final answer
    x = 7,287.62

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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.