Home / 5,280.40-7,284.36-4,502.80

Finding the Fourth Proportional to 5,280.40, 7,284.36 and 4,502.80

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Solution

The fourth proportional to 5,280.40, 7,284.36 and 4,502.80 is: 6,211.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280.40 : 7,284.36 = 4,502.80 : x
  2. Step 2: Convert to fraction form
    5,280.40/7,284.36 = 4,502.80/x
  3. Step 3: Cross multiply
    5,280.40x = 7,284.36 × 4,502.80
  4. Step 4: Simplify right side
    5,280.40x = 32,800,016.21
  5. Step 5: Solve for x
    x = 32,800,016.21/5,280.40
  6. Step 6: Final answer
    x = 6,211.65

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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.