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Finding the Fourth Proportional to 8,992.40, 13,482.76 and 4,312.30

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Solution

The fourth proportional to 8,992.40, 13,482.76 and 4,312.30 is: 6,465.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,992.40 : 13,482.76 = 4,312.30 : x
  2. Step 2: Convert to fraction form
    8,992.40/13,482.76 = 4,312.30/x
  3. Step 3: Cross multiply
    8,992.40x = 13,482.76 × 4,312.30
  4. Step 4: Simplify right side
    8,992.40x = 58,141,705.95
  5. Step 5: Solve for x
    x = 58,141,705.95/8,992.40
  6. Step 6: Final answer
    x = 6,465.65

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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.