Home / 7,352.72-10,139.78-5,671.47

Finding the Fourth Proportional to 7,352.72, 10,139.78 and 5,671.47

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Solution

The fourth proportional to 7,352.72, 10,139.78 and 5,671.47 is: 7,821.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,352.72 : 10,139.78 = 5,671.47 : x
  2. Step 2: Convert to fraction form
    7,352.72/10,139.78 = 5,671.47/x
  3. Step 3: Cross multiply
    7,352.72x = 10,139.78 × 5,671.47
  4. Step 4: Simplify right side
    7,352.72x = 57,507,453.24
  5. Step 5: Solve for x
    x = 57,507,453.24/7,352.72
  6. Step 6: Final answer
    x = 7,821.24

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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.