Home / 3,157.07-4,352.70-2,160.63

Finding the Fourth Proportional to 3,157.07, 4,352.70 and 2,160.63

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Solution

The fourth proportional to 3,157.07, 4,352.70 and 2,160.63 is: 2,978.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,157.07 : 4,352.70 = 2,160.63 : x
  2. Step 2: Convert to fraction form
    3,157.07/4,352.70 = 2,160.63/x
  3. Step 3: Cross multiply
    3,157.07x = 4,352.70 × 2,160.63
  4. Step 4: Simplify right side
    3,157.07x = 9,404,574.20
  5. Step 5: Solve for x
    x = 9,404,574.20/3,157.07
  6. Step 6: Final answer
    x = 2,978.90

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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.