Home / 7,321.08-10,104-5,641.12

Finding the Fourth Proportional to 7,321.08, 10,104 and 5,641.12

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Solution

The fourth proportional to 7,321.08, 10,104 and 5,641.12 is: 7,785.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,321.08 : 10,104 = 5,641.12 : x
  2. Step 2: Convert to fraction form
    7,321.08/10,104 = 5,641.12/x
  3. Step 3: Cross multiply
    7,321.08x = 10,104 × 5,641.12
  4. Step 4: Simplify right side
    7,321.08x = 56,997,876.48
  5. Step 5: Solve for x
    x = 56,997,876.48/7,321.08
  6. Step 6: Final answer
    x = 7,785.45

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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.