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Finding the Fourth Proportional to 2,700.50, 3,724.95 and 1,913.18

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Solution

The fourth proportional to 2,700.50, 3,724.95 and 1,913.18 is: 2,638.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,700.50 : 3,724.95 = 1,913.18 : x
  2. Step 2: Convert to fraction form
    2,700.50/3,724.95 = 1,913.18/x
  3. Step 3: Cross multiply
    2,700.50x = 3,724.95 × 1,913.18
  4. Step 4: Simplify right side
    2,700.50x = 7,126,499.84
  5. Step 5: Solve for x
    x = 7,126,499.84/2,700.50
  6. Step 6: Final answer
    x = 2,638.96

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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.