Home / 5,270.40-7,904.10-1,981.08

Finding the Fourth Proportional to 5,270.40, 7,904.10 and 1,981.08

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Solution

The fourth proportional to 5,270.40, 7,904.10 and 1,981.08 is: 2,971.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,270.40 : 7,904.10 = 1,981.08 : x
  2. Step 2: Convert to fraction form
    5,270.40/7,904.10 = 1,981.08/x
  3. Step 3: Cross multiply
    5,270.40x = 7,904.10 × 1,981.08
  4. Step 4: Simplify right side
    5,270.40x = 15,658,654.43
  5. Step 5: Solve for x
    x = 15,658,654.43/5,270.40
  6. Step 6: Final answer
    x = 2,971.06

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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.