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Finding the Fourth Proportional to 5,061.76, 6,985.80 and 3,072.24

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Solution

The fourth proportional to 5,061.76, 6,985.80 and 3,072.24 is: 4,240.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,061.76 : 6,985.80 = 3,072.24 : x
  2. Step 2: Convert to fraction form
    5,061.76/6,985.80 = 3,072.24/x
  3. Step 3: Cross multiply
    5,061.76x = 6,985.80 × 3,072.24
  4. Step 4: Simplify right side
    5,061.76x = 21,462,054.19
  5. Step 5: Solve for x
    x = 21,462,054.19/5,061.76
  6. Step 6: Final answer
    x = 4,240.04

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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.