Home / 7,931.84-11,895.30-5,482.40

Finding the Fourth Proportional to 7,931.84, 11,895.30 and 5,482.40

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Solution

The fourth proportional to 7,931.84, 11,895.30 and 5,482.40 is: 8,221.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,931.84 : 11,895.30 = 5,482.40 : x
  2. Step 2: Convert to fraction form
    7,931.84/11,895.30 = 5,482.40/x
  3. Step 3: Cross multiply
    7,931.84x = 11,895.30 × 5,482.40
  4. Step 4: Simplify right side
    7,931.84x = 65,214,733.24
  5. Step 5: Solve for x
    x = 65,214,733.24/7,931.84
  6. Step 6: Final answer
    x = 8,221.90

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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.