Home / 2,347.49-3,239.40-1,285.05

Finding the Fourth Proportional to 2,347.49, 3,239.40 and 1,285.05

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Solution

The fourth proportional to 2,347.49, 3,239.40 and 1,285.05 is: 1,773.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,347.49 : 3,239.40 = 1,285.05 : x
  2. Step 2: Convert to fraction form
    2,347.49/3,239.40 = 1,285.05/x
  3. Step 3: Cross multiply
    2,347.49x = 3,239.40 × 1,285.05
  4. Step 4: Simplify right side
    2,347.49x = 4,162,790.97
  5. Step 5: Solve for x
    x = 4,162,790.97/2,347.49
  6. Step 6: Final answer
    x = 1,773.29

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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.