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Finding the Fourth Proportional to 6,113.80, 9,159.90 and 5,012.20

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Solution

The fourth proportional to 6,113.80, 9,159.90 and 5,012.20 is: 7,509.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,113.80 : 9,159.90 = 5,012.20 : x
  2. Step 2: Convert to fraction form
    6,113.80/9,159.90 = 5,012.20/x
  3. Step 3: Cross multiply
    6,113.80x = 9,159.90 × 5,012.20
  4. Step 4: Simplify right side
    6,113.80x = 45,911,250.78
  5. Step 5: Solve for x
    x = 45,911,250.78/6,113.80
  6. Step 6: Final answer
    x = 7,509.45

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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.