Home / 5,130.99-7,077.24-3,142.53

Finding the Fourth Proportional to 5,130.99, 7,077.24 and 3,142.53

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Solution

The fourth proportional to 5,130.99, 7,077.24 and 3,142.53 is: 4,334.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,130.99 : 7,077.24 = 3,142.53 : x
  2. Step 2: Convert to fraction form
    5,130.99/7,077.24 = 3,142.53/x
  3. Step 3: Cross multiply
    5,130.99x = 7,077.24 × 3,142.53
  4. Step 4: Simplify right side
    5,130.99x = 22,240,439.02
  5. Step 5: Solve for x
    x = 22,240,439.02/5,130.99
  6. Step 6: Final answer
    x = 4,334.53

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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.