Home / 4,280.13-6,420.18-1,358.66

Finding the Fourth Proportional to 4,280.13, 6,420.18 and 1,358.66

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Solution

The fourth proportional to 4,280.13, 6,420.18 and 1,358.66 is: 2,037.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,280.13 : 6,420.18 = 1,358.66 : x
  2. Step 2: Convert to fraction form
    4,280.13/6,420.18 = 1,358.66/x
  3. Step 3: Cross multiply
    4,280.13x = 6,420.18 × 1,358.66
  4. Step 4: Simplify right side
    4,280.13x = 8,722,841.76
  5. Step 5: Solve for x
    x = 8,722,841.76/4,280.13
  6. Step 6: Final answer
    x = 2,037.99

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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.