Home / 2,439.53-3,365.72-1,990.61

Finding the Fourth Proportional to 2,439.53, 3,365.72 and 1,990.61

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Solution

The fourth proportional to 2,439.53, 3,365.72 and 1,990.61 is: 2,746.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,439.53 : 3,365.72 = 1,990.61 : x
  2. Step 2: Convert to fraction form
    2,439.53/3,365.72 = 1,990.61/x
  3. Step 3: Cross multiply
    2,439.53x = 3,365.72 × 1,990.61
  4. Step 4: Simplify right side
    2,439.53x = 6,699,809.11
  5. Step 5: Solve for x
    x = 6,699,809.11/2,439.53
  6. Step 6: Final answer
    x = 2,746.36

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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.