Home / 3,045.78-4,565.33-1,990.31

Finding the Fourth Proportional to 3,045.78, 4,565.33 and 1,990.31

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Solution

The fourth proportional to 3,045.78, 4,565.33 and 1,990.31 is: 2,983.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,045.78 : 4,565.33 = 1,990.31 : x
  2. Step 2: Convert to fraction form
    3,045.78/4,565.33 = 1,990.31/x
  3. Step 3: Cross multiply
    3,045.78x = 4,565.33 × 1,990.31
  4. Step 4: Simplify right side
    3,045.78x = 9,086,389.17
  5. Step 5: Solve for x
    x = 9,086,389.17/3,045.78
  6. Step 6: Final answer
    x = 2,983.27

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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.