Home / 7,972.30-11,001.72-4,615.12

Finding the Fourth Proportional to 7,972.30, 11,001.72 and 4,615.12

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Solution

The fourth proportional to 7,972.30, 11,001.72 and 4,615.12 is: 6,368.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,972.30 : 11,001.72 = 4,615.12 : x
  2. Step 2: Convert to fraction form
    7,972.30/11,001.72 = 4,615.12/x
  3. Step 3: Cross multiply
    7,972.30x = 11,001.72 × 4,615.12
  4. Step 4: Simplify right side
    7,972.30x = 50,774,258.01
  5. Step 5: Solve for x
    x = 50,774,258.01/7,972.30
  6. Step 6: Final answer
    x = 6,368.83

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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.