Home / 7,905.85-10,901.18-5,389.43

Finding the Fourth Proportional to 7,905.85, 10,901.18 and 5,389.43

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Solution

The fourth proportional to 7,905.85, 10,901.18 and 5,389.43 is: 7,431.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,905.85 : 10,901.18 = 5,389.43 : x
  2. Step 2: Convert to fraction form
    7,905.85/10,901.18 = 5,389.43/x
  3. Step 3: Cross multiply
    7,905.85x = 10,901.18 × 5,389.43
  4. Step 4: Simplify right side
    7,905.85x = 58,751,146.53
  5. Step 5: Solve for x
    x = 58,751,146.53/7,905.85
  6. Step 6: Final answer
    x = 7,431.36

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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.