Home / 2,638.40-3,644.04-1,752.66

Finding the Fourth Proportional to 2,638.40, 3,644.04 and 1,752.66

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Solution

The fourth proportional to 2,638.40, 3,644.04 and 1,752.66 is: 2,420.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,638.40 : 3,644.04 = 1,752.66 : x
  2. Step 2: Convert to fraction form
    2,638.40/3,644.04 = 1,752.66/x
  3. Step 3: Cross multiply
    2,638.40x = 3,644.04 × 1,752.66
  4. Step 4: Simplify right side
    2,638.40x = 6,386,763.15
  5. Step 5: Solve for x
    x = 6,386,763.15/2,638.40
  6. Step 6: Final answer
    x = 2,420.70

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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.