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Finding the Fourth Proportional to 5,117.13, 7,674 and 1,653.57

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Solution

The fourth proportional to 5,117.13, 7,674 and 1,653.57 is: 2,479.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,117.13 : 7,674 = 1,653.57 : x
  2. Step 2: Convert to fraction form
    5,117.13/7,674 = 1,653.57/x
  3. Step 3: Cross multiply
    5,117.13x = 7,674 × 1,653.57
  4. Step 4: Simplify right side
    5,117.13x = 12,689,496.18
  5. Step 5: Solve for x
    x = 12,689,496.18/5,117.13
  6. Step 6: Final answer
    x = 2,479.81

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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.