Home / 2,545.40-3,817.31-985.30

Finding the Fourth Proportional to 2,545.40, 3,817.31 and 985.30

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Solution

The fourth proportional to 2,545.40, 3,817.31 and 985.30 is: 1,477.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,545.40 : 3,817.31 = 985.30 : x
  2. Step 2: Convert to fraction form
    2,545.40/3,817.31 = 985.30/x
  3. Step 3: Cross multiply
    2,545.40x = 3,817.31 × 985.30
  4. Step 4: Simplify right side
    2,545.40x = 3,761,181.07
  5. Step 5: Solve for x
    x = 3,761,181.07/2,545.40
  6. Step 6: Final answer
    x = 1,477.64

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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.