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Finding the Fourth Proportional to 3,510.12, 5,265.18 and 913.32

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Solution

The fourth proportional to 3,510.12, 5,265.18 and 913.32 is: 1,369.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,510.12 : 5,265.18 = 913.32 : x
  2. Step 2: Convert to fraction form
    3,510.12/5,265.18 = 913.32/x
  3. Step 3: Cross multiply
    3,510.12x = 5,265.18 × 913.32
  4. Step 4: Simplify right side
    3,510.12x = 4,808,794.20
  5. Step 5: Solve for x
    x = 4,808,794.20/3,510.12
  6. Step 6: Final answer
    x = 1,369.98

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Similar ratio
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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.