Home / 5,680.90-8,521.43-1,785.31

Finding the Fourth Proportional to 5,680.90, 8,521.43 and 1,785.31

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Solution

The fourth proportional to 5,680.90, 8,521.43 and 1,785.31 is: 2,677.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,680.90 : 8,521.43 = 1,785.31 : x
  2. Step 2: Convert to fraction form
    5,680.90/8,521.43 = 1,785.31/x
  3. Step 3: Cross multiply
    5,680.90x = 8,521.43 × 1,785.31
  4. Step 4: Simplify right side
    5,680.90x = 15,213,363.96
  5. Step 5: Solve for x
    x = 15,213,363.96/5,680.90
  6. Step 6: Final answer
    x = 2,677.99

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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.