Home / 2,987.24-4,124.40-2,671.52

Finding the Fourth Proportional to 2,987.24, 4,124.40 and 2,671.52

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Solution

The fourth proportional to 2,987.24, 4,124.40 and 2,671.52 is: 3,688.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.24 : 4,124.40 = 2,671.52 : x
  2. Step 2: Convert to fraction form
    2,987.24/4,124.40 = 2,671.52/x
  3. Step 3: Cross multiply
    2,987.24x = 4,124.40 × 2,671.52
  4. Step 4: Simplify right side
    2,987.24x = 11,018,417.09
  5. Step 5: Solve for x
    x = 11,018,417.09/2,987.24
  6. Step 6: Final answer
    x = 3,688.49

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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.