Home / 2,902.20-4,005.12-1,643.23

Finding the Fourth Proportional to 2,902.20, 4,005.12 and 1,643.23

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Solution

The fourth proportional to 2,902.20, 4,005.12 and 1,643.23 is: 2,267.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,902.20 : 4,005.12 = 1,643.23 : x
  2. Step 2: Convert to fraction form
    2,902.20/4,005.12 = 1,643.23/x
  3. Step 3: Cross multiply
    2,902.20x = 4,005.12 × 1,643.23
  4. Step 4: Simplify right side
    2,902.20x = 6,581,305.10
  5. Step 5: Solve for x
    x = 6,581,305.10/2,902.20
  6. Step 6: Final answer
    x = 2,267.70

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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.