Home / 2,070.28-3,102.30-916.84

Finding the Fourth Proportional to 2,070.28, 3,102.30 and 916.84

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Solution

The fourth proportional to 2,070.28, 3,102.30 and 916.84 is: 1,373.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,070.28 : 3,102.30 = 916.84 : x
  2. Step 2: Convert to fraction form
    2,070.28/3,102.30 = 916.84/x
  3. Step 3: Cross multiply
    2,070.28x = 3,102.30 × 916.84
  4. Step 4: Simplify right side
    2,070.28x = 2,844,312.73
  5. Step 5: Solve for x
    x = 2,844,312.73/2,070.28
  6. Step 6: Final answer
    x = 1,373.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.