Home / 3,557.22-4,909.08-1,985.61

Finding the Fourth Proportional to 3,557.22, 4,909.08 and 1,985.61

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Solution

The fourth proportional to 3,557.22, 4,909.08 and 1,985.61 is: 2,740.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,557.22 : 4,909.08 = 1,985.61 : x
  2. Step 2: Convert to fraction form
    3,557.22/4,909.08 = 1,985.61/x
  3. Step 3: Cross multiply
    3,557.22x = 4,909.08 × 1,985.61
  4. Step 4: Simplify right side
    3,557.22x = 9,747,518.34
  5. Step 5: Solve for x
    x = 9,747,518.34/3,557.22
  6. Step 6: Final answer
    x = 2,740.21

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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.