Home / 7,135.78-9,849.36-4,152.19

Finding the Fourth Proportional to 7,135.78, 9,849.36 and 4,152.19

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Solution

The fourth proportional to 7,135.78, 9,849.36 and 4,152.19 is: 5,731.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,135.78 : 9,849.36 = 4,152.19 : x
  2. Step 2: Convert to fraction form
    7,135.78/9,849.36 = 4,152.19/x
  3. Step 3: Cross multiply
    7,135.78x = 9,849.36 × 4,152.19
  4. Step 4: Simplify right side
    7,135.78x = 40,896,393.34
  5. Step 5: Solve for x
    x = 40,896,393.34/7,135.78
  6. Step 6: Final answer
    x = 5,731.17

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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.