Home / 2,867.48-3,931.36-2,815.64

Finding the Fourth Proportional to 2,867.48, 3,931.36 and 2,815.64

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Solution

The fourth proportional to 2,867.48, 3,931.36 and 2,815.64 is: 3,860.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,867.48 : 3,931.36 = 2,815.64 : x
  2. Step 2: Convert to fraction form
    2,867.48/3,931.36 = 2,815.64/x
  3. Step 3: Cross multiply
    2,867.48x = 3,931.36 × 2,815.64
  4. Step 4: Simplify right side
    2,867.48x = 11,069,294.47
  5. Step 5: Solve for x
    x = 11,069,294.47/2,867.48
  6. Step 6: Final answer
    x = 3,860.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.