Home / 3,147.34-4,342.90-1,802.79

Finding the Fourth Proportional to 3,147.34, 4,342.90 and 1,802.79

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Solution

The fourth proportional to 3,147.34, 4,342.90 and 1,802.79 is: 2,487.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.34 : 4,342.90 = 1,802.79 : x
  2. Step 2: Convert to fraction form
    3,147.34/4,342.90 = 1,802.79/x
  3. Step 3: Cross multiply
    3,147.34x = 4,342.90 × 1,802.79
  4. Step 4: Simplify right side
    3,147.34x = 7,829,335.56
  5. Step 5: Solve for x
    x = 7,829,335.56/3,147.34
  6. Step 6: Final answer
    x = 2,487.60

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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.