Home / 6,490.03-8,937.38-5,638.89

Finding the Fourth Proportional to 6,490.03, 8,937.38 and 5,638.89

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Solution

The fourth proportional to 6,490.03, 8,937.38 and 5,638.89 is: 7,765.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,490.03 : 8,937.38 = 5,638.89 : x
  2. Step 2: Convert to fraction form
    6,490.03/8,937.38 = 5,638.89/x
  3. Step 3: Cross multiply
    6,490.03x = 8,937.38 × 5,638.89
  4. Step 4: Simplify right side
    6,490.03x = 50,396,902.71
  5. Step 5: Solve for x
    x = 50,396,902.71/6,490.03
  6. Step 6: Final answer
    x = 7,765.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.