Home / 7,955.10-10,979.19-5,121.54

Finding the Fourth Proportional to 7,955.10, 10,979.19 and 5,121.54

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Solution

The fourth proportional to 7,955.10, 10,979.19 and 5,121.54 is: 7,068.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,955.10 : 10,979.19 = 5,121.54 : x
  2. Step 2: Convert to fraction form
    7,955.10/10,979.19 = 5,121.54/x
  3. Step 3: Cross multiply
    7,955.10x = 10,979.19 × 5,121.54
  4. Step 4: Simplify right side
    7,955.10x = 56,230,360.75
  5. Step 5: Solve for x
    x = 56,230,360.75/7,955.10
  6. Step 6: Final answer
    x = 7,068.47

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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.