Home / 5,157.44-7,117.20-3,140.18

Finding the Fourth Proportional to 5,157.44, 7,117.20 and 3,140.18

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Solution

The fourth proportional to 5,157.44, 7,117.20 and 3,140.18 is: 4,333.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,157.44 : 7,117.20 = 3,140.18 : x
  2. Step 2: Convert to fraction form
    5,157.44/7,117.20 = 3,140.18/x
  3. Step 3: Cross multiply
    5,157.44x = 7,117.20 × 3,140.18
  4. Step 4: Simplify right side
    5,157.44x = 22,349,289.10
  5. Step 5: Solve for x
    x = 22,349,289.10/5,157.44
  6. Step 6: Final answer
    x = 4,333.41

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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.