Home / 5,130.35-7,080.41-3,142.23

Finding the Fourth Proportional to 5,130.35, 7,080.41 and 3,142.23

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Solution

The fourth proportional to 5,130.35, 7,080.41 and 3,142.23 is: 4,336.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,130.35 : 7,080.41 = 3,142.23 : x
  2. Step 2: Convert to fraction form
    5,130.35/7,080.41 = 3,142.23/x
  3. Step 3: Cross multiply
    5,130.35x = 7,080.41 × 3,142.23
  4. Step 4: Simplify right side
    5,130.35x = 22,248,276.71
  5. Step 5: Solve for x
    x = 22,248,276.71/5,130.35
  6. Step 6: Final answer
    x = 4,336.60

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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.