Home / 3,124.35-4,315.16-2,127.90

Finding the Fourth Proportional to 3,124.35, 4,315.16 and 2,127.90

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Solution

The fourth proportional to 3,124.35, 4,315.16 and 2,127.90 is: 2,938.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,124.35 : 4,315.16 = 2,127.90 : x
  2. Step 2: Convert to fraction form
    3,124.35/4,315.16 = 2,127.90/x
  3. Step 3: Cross multiply
    3,124.35x = 4,315.16 × 2,127.90
  4. Step 4: Simplify right side
    3,124.35x = 9,182,218.32
  5. Step 5: Solve for x
    x = 9,182,218.32/3,124.35
  6. Step 6: Final answer
    x = 2,938.92

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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.