Home / 2,982.76-4,116.90-1,988.08

Finding the Fourth Proportional to 2,982.76, 4,116.90 and 1,988.08

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Solution

The fourth proportional to 2,982.76, 4,116.90 and 1,988.08 is: 2,744.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,982.76 : 4,116.90 = 1,988.08 : x
  2. Step 2: Convert to fraction form
    2,982.76/4,116.90 = 1,988.08/x
  3. Step 3: Cross multiply
    2,982.76x = 4,116.90 × 1,988.08
  4. Step 4: Simplify right side
    2,982.76x = 8,184,726.55
  5. Step 5: Solve for x
    x = 8,184,726.55/2,982.76
  6. Step 6: Final answer
    x = 2,744.01

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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.