Home / 5,135.20-7,100.40-4,479.10

Finding the Fourth Proportional to 5,135.20, 7,100.40 and 4,479.10

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Solution

The fourth proportional to 5,135.20, 7,100.40 and 4,479.10 is: 6,193.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.20 : 7,100.40 = 4,479.10 : x
  2. Step 2: Convert to fraction form
    5,135.20/7,100.40 = 4,479.10/x
  3. Step 3: Cross multiply
    5,135.20x = 7,100.40 × 4,479.10
  4. Step 4: Simplify right side
    5,135.20x = 31,803,401.64
  5. Step 5: Solve for x
    x = 31,803,401.64/5,135.20
  6. Step 6: Final answer
    x = 6,193.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.