Home / 8,280.48-12,419.40-2,275.16

Finding the Fourth Proportional to 8,280.48, 12,419.40 and 2,275.16

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Solution

The fourth proportional to 8,280.48, 12,419.40 and 2,275.16 is: 3,412.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,280.48 : 12,419.40 = 2,275.16 : x
  2. Step 2: Convert to fraction form
    8,280.48/12,419.40 = 2,275.16/x
  3. Step 3: Cross multiply
    8,280.48x = 12,419.40 × 2,275.16
  4. Step 4: Simplify right side
    8,280.48x = 28,256,122.10
  5. Step 5: Solve for x
    x = 28,256,122.10/8,280.48
  6. Step 6: Final answer
    x = 3,412.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.