Home / 8,423.60-12,622.64-4,720.28

Finding the Fourth Proportional to 8,423.60, 12,622.64 and 4,720.28

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Solution

The fourth proportional to 8,423.60, 12,622.64 and 4,720.28 is: 7,073.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,423.60 : 12,622.64 = 4,720.28 : x
  2. Step 2: Convert to fraction form
    8,423.60/12,622.64 = 4,720.28/x
  3. Step 3: Cross multiply
    8,423.60x = 12,622.64 × 4,720.28
  4. Step 4: Simplify right side
    8,423.60x = 59,582,308.42
  5. Step 5: Solve for x
    x = 59,582,308.42/8,423.60
  6. Step 6: Final answer
    x = 7,073.26

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1.5x scale

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.