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Finding the Fourth Proportional to 3,604.79, 5,407.18 and 868.79

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Solution

The fourth proportional to 3,604.79, 5,407.18 and 868.79 is: 1,303.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,604.79 : 5,407.18 = 868.79 : x
  2. Step 2: Convert to fraction form
    3,604.79/5,407.18 = 868.79/x
  3. Step 3: Cross multiply
    3,604.79x = 5,407.18 × 868.79
  4. Step 4: Simplify right side
    3,604.79x = 4,697,715.26
  5. Step 5: Solve for x
    x = 4,697,715.26/3,604.79
  6. Step 6: Final answer
    x = 1,303.19

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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.