Home / 7,045.47-9,722.75-3,858.78

Finding the Fourth Proportional to 7,045.47, 9,722.75 and 3,858.78

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Solution

The fourth proportional to 7,045.47, 9,722.75 and 3,858.78 is: 5,325.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,045.47 : 9,722.75 = 3,858.78 : x
  2. Step 2: Convert to fraction form
    7,045.47/9,722.75 = 3,858.78/x
  3. Step 3: Cross multiply
    7,045.47x = 9,722.75 × 3,858.78
  4. Step 4: Simplify right side
    7,045.47x = 37,517,914.28
  5. Step 5: Solve for x
    x = 37,517,914.28/7,045.47
  6. Step 6: Final answer
    x = 5,325.11

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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.