Home / 2,116.04-2,921.30-1,276.90

Finding the Fourth Proportional to 2,116.04, 2,921.30 and 1,276.90

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Solution

The fourth proportional to 2,116.04, 2,921.30 and 1,276.90 is: 1,762.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,116.04 : 2,921.30 = 1,276.90 : x
  2. Step 2: Convert to fraction form
    2,116.04/2,921.30 = 1,276.90/x
  3. Step 3: Cross multiply
    2,116.04x = 2,921.30 × 1,276.90
  4. Step 4: Simplify right side
    2,116.04x = 3,730,207.97
  5. Step 5: Solve for x
    x = 3,730,207.97/2,116.04
  6. Step 6: Final answer
    x = 1,762.82

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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.