Home / 3,710.74-5,120.55-2,117.45

Finding the Fourth Proportional to 3,710.74, 5,120.55 and 2,117.45

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Solution

The fourth proportional to 3,710.74, 5,120.55 and 2,117.45 is: 2,921.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,710.74 : 5,120.55 = 2,117.45 : x
  2. Step 2: Convert to fraction form
    3,710.74/5,120.55 = 2,117.45/x
  3. Step 3: Cross multiply
    3,710.74x = 5,120.55 × 2,117.45
  4. Step 4: Simplify right side
    3,710.74x = 10,842,508.60
  5. Step 5: Solve for x
    x = 10,842,508.60/3,710.74
  6. Step 6: Final answer
    x = 2,921.93

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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.