Home / 7,988.40-11,023.97-4,631.90

Finding the Fourth Proportional to 7,988.40, 11,023.97 and 4,631.90

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Solution

The fourth proportional to 7,988.40, 11,023.97 and 4,631.90 is: 6,392.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,988.40 : 11,023.97 = 4,631.90 : x
  2. Step 2: Convert to fraction form
    7,988.40/11,023.97 = 4,631.90/x
  3. Step 3: Cross multiply
    7,988.40x = 11,023.97 × 4,631.90
  4. Step 4: Simplify right side
    7,988.40x = 51,061,848.36
  5. Step 5: Solve for x
    x = 51,061,848.36/7,988.40
  6. Step 6: Final answer
    x = 6,392.00

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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.