Home / 7,988.67-11,983.55-2,721.51

Finding the Fourth Proportional to 7,988.67, 11,983.55 and 2,721.51

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Solution

The fourth proportional to 7,988.67, 11,983.55 and 2,721.51 is: 4,082.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,988.67 : 11,983.55 = 2,721.51 : x
  2. Step 2: Convert to fraction form
    7,988.67/11,983.55 = 2,721.51/x
  3. Step 3: Cross multiply
    7,988.67x = 11,983.55 × 2,721.51
  4. Step 4: Simplify right side
    7,988.67x = 32,613,337.55
  5. Step 5: Solve for x
    x = 32,613,337.55/7,988.67
  6. Step 6: Final answer
    x = 4,082.45

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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.