Home / 5,130.18-7,079.22-3,140.46

Finding the Fourth Proportional to 5,130.18, 7,079.22 and 3,140.46

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Solution

The fourth proportional to 5,130.18, 7,079.22 and 3,140.46 is: 4,333.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,130.18 : 7,079.22 = 3,140.46 : x
  2. Step 2: Convert to fraction form
    5,130.18/7,079.22 = 3,140.46/x
  3. Step 3: Cross multiply
    5,130.18x = 7,079.22 × 3,140.46
  4. Step 4: Simplify right side
    5,130.18x = 22,232,007.24
  5. Step 5: Solve for x
    x = 22,232,007.24/5,130.18
  6. Step 6: Final answer
    x = 4,333.57

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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.