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Finding the Fourth Proportional to 3,888.76, 5,362.68 and 3,048.16

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Solution

The fourth proportional to 3,888.76, 5,362.68 and 3,048.16 is: 4,203.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,888.76 : 5,362.68 = 3,048.16 : x
  2. Step 2: Convert to fraction form
    3,888.76/5,362.68 = 3,048.16/x
  3. Step 3: Cross multiply
    3,888.76x = 5,362.68 × 3,048.16
  4. Step 4: Simplify right side
    3,888.76x = 16,346,306.67
  5. Step 5: Solve for x
    x = 16,346,306.67/3,888.76
  6. Step 6: Final answer
    x = 4,203.48

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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.