Home / 5,153.65-7,113.68-3,138.16

Finding the Fourth Proportional to 5,153.65, 7,113.68 and 3,138.16

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Solution

The fourth proportional to 5,153.65, 7,113.68 and 3,138.16 is: 4,331.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,153.65 : 7,113.68 = 3,138.16 : x
  2. Step 2: Convert to fraction form
    5,153.65/7,113.68 = 3,138.16/x
  3. Step 3: Cross multiply
    5,153.65x = 7,113.68 × 3,138.16
  4. Step 4: Simplify right side
    5,153.65x = 22,323,866.03
  5. Step 5: Solve for x
    x = 22,323,866.03/5,153.65
  6. Step 6: Final answer
    x = 4,331.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.