Home / 4,685.60-7,029.82-1,398.80

Finding the Fourth Proportional to 4,685.60, 7,029.82 and 1,398.80

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Solution

The fourth proportional to 4,685.60, 7,029.82 and 1,398.80 is: 2,098.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,685.60 : 7,029.82 = 1,398.80 : x
  2. Step 2: Convert to fraction form
    4,685.60/7,029.82 = 1,398.80/x
  3. Step 3: Cross multiply
    4,685.60x = 7,029.82 × 1,398.80
  4. Step 4: Simplify right side
    4,685.60x = 9,833,312.22
  5. Step 5: Solve for x
    x = 9,833,312.22/4,685.60
  6. Step 6: Final answer
    x = 2,098.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.