Home / 2,127.88-2,937.60-1,372.12

Finding the Fourth Proportional to 2,127.88, 2,937.60 and 1,372.12

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Solution

The fourth proportional to 2,127.88, 2,937.60 and 1,372.12 is: 1,894.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,127.88 : 2,937.60 = 1,372.12 : x
  2. Step 2: Convert to fraction form
    2,127.88/2,937.60 = 1,372.12/x
  3. Step 3: Cross multiply
    2,127.88x = 2,937.60 × 1,372.12
  4. Step 4: Simplify right side
    2,127.88x = 4,030,739.71
  5. Step 5: Solve for x
    x = 4,030,739.71/2,127.88
  6. Step 6: Final answer
    x = 1,894.25

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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.