Home / 4,320.10-6,478.79-1,397.80

Finding the Fourth Proportional to 4,320.10, 6,478.79 and 1,397.80

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Solution

The fourth proportional to 4,320.10, 6,478.79 and 1,397.80 is: 2,096.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,320.10 : 6,478.79 = 1,397.80 : x
  2. Step 2: Convert to fraction form
    4,320.10/6,478.79 = 1,397.80/x
  3. Step 3: Cross multiply
    4,320.10x = 6,478.79 × 1,397.80
  4. Step 4: Simplify right side
    4,320.10x = 9,056,023.76
  5. Step 5: Solve for x
    x = 9,056,023.76/4,320.10
  6. Step 6: Final answer
    x = 2,096.26

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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.