Home / 5,540.10-8,312.85-4,223.40

Finding the Fourth Proportional to 5,540.10, 8,312.85 and 4,223.40

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Solution

The fourth proportional to 5,540.10, 8,312.85 and 4,223.40 is: 6,337.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,540.10 : 8,312.85 = 4,223.40 : x
  2. Step 2: Convert to fraction form
    5,540.10/8,312.85 = 4,223.40/x
  3. Step 3: Cross multiply
    5,540.10x = 8,312.85 × 4,223.40
  4. Step 4: Simplify right side
    5,540.10x = 35,108,490.69
  5. Step 5: Solve for x
    x = 35,108,490.69/5,540.10
  6. Step 6: Final answer
    x = 6,337.16

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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.