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Finding the Fourth Proportional to 3,325.46, 4,988.23 and 860.11

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Solution

The fourth proportional to 3,325.46, 4,988.23 and 860.11 is: 1,290.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,325.46 : 4,988.23 = 860.11 : x
  2. Step 2: Convert to fraction form
    3,325.46/4,988.23 = 860.11/x
  3. Step 3: Cross multiply
    3,325.46x = 4,988.23 × 860.11
  4. Step 4: Simplify right side
    3,325.46x = 4,290,411.88
  5. Step 5: Solve for x
    x = 4,290,411.88/3,325.46
  6. Step 6: Final answer
    x = 1,290.17

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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.