Home / 5,417.10-8,126.55-2,130.30

Finding the Fourth Proportional to 5,417.10, 8,126.55 and 2,130.30

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Solution

The fourth proportional to 5,417.10, 8,126.55 and 2,130.30 is: 3,195.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,417.10 : 8,126.55 = 2,130.30 : x
  2. Step 2: Convert to fraction form
    5,417.10/8,126.55 = 2,130.30/x
  3. Step 3: Cross multiply
    5,417.10x = 8,126.55 × 2,130.30
  4. Step 4: Simplify right side
    5,417.10x = 17,311,989.47
  5. Step 5: Solve for x
    x = 17,311,989.47/5,417.10
  6. Step 6: Final answer
    x = 3,195.80

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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.