Home / 5,148.81-7,726.86-3,689.19

Finding the Fourth Proportional to 5,148.81, 7,726.86 and 3,689.19

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Solution

The fourth proportional to 5,148.81, 7,726.86 and 3,689.19 is: 5,536.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,148.81 : 7,726.86 = 3,689.19 : x
  2. Step 2: Convert to fraction form
    5,148.81/7,726.86 = 3,689.19/x
  3. Step 3: Cross multiply
    5,148.81x = 7,726.86 × 3,689.19
  4. Step 4: Simplify right side
    5,148.81x = 28,505,854.64
  5. Step 5: Solve for x
    x = 28,505,854.64/5,148.81
  6. Step 6: Final answer
    x = 5,536.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.