Home / 3,707.80-5,117.28-2,135.62

Finding the Fourth Proportional to 3,707.80, 5,117.28 and 2,135.62

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Solution

The fourth proportional to 3,707.80, 5,117.28 and 2,135.62 is: 2,947.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,707.80 : 5,117.28 = 2,135.62 : x
  2. Step 2: Convert to fraction form
    3,707.80/5,117.28 = 2,135.62/x
  3. Step 3: Cross multiply
    3,707.80x = 5,117.28 × 2,135.62
  4. Step 4: Simplify right side
    3,707.80x = 10,928,565.51
  5. Step 5: Solve for x
    x = 10,928,565.51/3,707.80
  6. Step 6: Final answer
    x = 2,947.45

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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.