Home / 5,458.74-8,129.36-5,274.21

Finding the Fourth Proportional to 5,458.74, 8,129.36 and 5,274.21

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Solution

The fourth proportional to 5,458.74, 8,129.36 and 5,274.21 is: 7,854.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,458.74 : 8,129.36 = 5,274.21 : x
  2. Step 2: Convert to fraction form
    5,458.74/8,129.36 = 5,274.21/x
  3. Step 3: Cross multiply
    5,458.74x = 8,129.36 × 5,274.21
  4. Step 4: Simplify right side
    5,458.74x = 42,875,995.48
  5. Step 5: Solve for x
    x = 42,875,995.48/5,458.74
  6. Step 6: Final answer
    x = 7,854.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.