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Finding the Fourth Proportional to 5,290.76, 7,931.48 and 2,001.45

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Solution

The fourth proportional to 5,290.76, 7,931.48 and 2,001.45 is: 3,000.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,290.76 : 7,931.48 = 2,001.45 : x
  2. Step 2: Convert to fraction form
    5,290.76/7,931.48 = 2,001.45/x
  3. Step 3: Cross multiply
    5,290.76x = 7,931.48 × 2,001.45
  4. Step 4: Simplify right side
    5,290.76x = 15,874,450.64
  5. Step 5: Solve for x
    x = 15,874,450.64/5,290.76
  6. Step 6: Final answer
    x = 3,000.41

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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.