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Finding the Fourth Proportional to 3,342.65, 4,989.95 and 3,099.30

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Solution

The fourth proportional to 3,342.65, 4,989.95 and 3,099.30 is: 4,626.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,342.65 : 4,989.95 = 3,099.30 : x
  2. Step 2: Convert to fraction form
    3,342.65/4,989.95 = 3,099.30/x
  3. Step 3: Cross multiply
    3,342.65x = 4,989.95 × 3,099.30
  4. Step 4: Simplify right side
    3,342.65x = 15,465,364.11
  5. Step 5: Solve for x
    x = 15,465,364.11/3,342.65
  6. Step 6: Final answer
    x = 4,626.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.