Home / 2,992.28-4,127.76-1,813.12

Finding the Fourth Proportional to 2,992.28, 4,127.76 and 1,813.12

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Solution

The fourth proportional to 2,992.28, 4,127.76 and 1,813.12 is: 2,501.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,992.28 : 4,127.76 = 1,813.12 : x
  2. Step 2: Convert to fraction form
    2,992.28/4,127.76 = 1,813.12/x
  3. Step 3: Cross multiply
    2,992.28x = 4,127.76 × 1,813.12
  4. Step 4: Simplify right side
    2,992.28x = 7,484,113.89
  5. Step 5: Solve for x
    x = 7,484,113.89/2,992.28
  6. Step 6: Final answer
    x = 2,501.15

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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.