Home / 2,987.24-4,123.14-1,925.72

Finding the Fourth Proportional to 2,987.24, 4,123.14 and 1,925.72

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Solution

The fourth proportional to 2,987.24, 4,123.14 and 1,925.72 is: 2,657.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.24 : 4,123.14 = 1,925.72 : x
  2. Step 2: Convert to fraction form
    2,987.24/4,123.14 = 1,925.72/x
  3. Step 3: Cross multiply
    2,987.24x = 4,123.14 × 1,925.72
  4. Step 4: Simplify right side
    2,987.24x = 7,940,013.16
  5. Step 5: Solve for x
    x = 7,940,013.16/2,987.24
  6. Step 6: Final answer
    x = 2,657.98

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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.