Home / 5,420.10-8,127.59-2,498.70

Finding the Fourth Proportional to 5,420.10, 8,127.59 and 2,498.70

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Solution

The fourth proportional to 5,420.10, 8,127.59 and 2,498.70 is: 3,746.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.10 : 8,127.59 = 2,498.70 : x
  2. Step 2: Convert to fraction form
    5,420.10/8,127.59 = 2,498.70/x
  3. Step 3: Cross multiply
    5,420.10x = 8,127.59 × 2,498.70
  4. Step 4: Simplify right side
    5,420.10x = 20,308,396.64
  5. Step 5: Solve for x
    x = 20,308,396.64/5,420.10
  6. Step 6: Final answer
    x = 3,746.87

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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.