Home / 3,124.32-4,686.16-1,275.64

Finding the Fourth Proportional to 3,124.32, 4,686.16 and 1,275.64

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Solution

The fourth proportional to 3,124.32, 4,686.16 and 1,275.64 is: 1,913.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,124.32 : 4,686.16 = 1,275.64 : x
  2. Step 2: Convert to fraction form
    3,124.32/4,686.16 = 1,275.64/x
  3. Step 3: Cross multiply
    3,124.32x = 4,686.16 × 1,275.64
  4. Step 4: Simplify right side
    3,124.32x = 5,977,853.14
  5. Step 5: Solve for x
    x = 5,977,853.14/3,124.32
  6. Step 6: Final answer
    x = 1,913.33

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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.