Home / 2,987.24-4,124.28-1,925.40

Finding the Fourth Proportional to 2,987.24, 4,124.28 and 1,925.40

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Solution

The fourth proportional to 2,987.24, 4,124.28 and 1,925.40 is: 2,658.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.24 : 4,124.28 = 1,925.40 : x
  2. Step 2: Convert to fraction form
    2,987.24/4,124.28 = 1,925.40/x
  3. Step 3: Cross multiply
    2,987.24x = 4,124.28 × 1,925.40
  4. Step 4: Simplify right side
    2,987.24x = 7,940,888.71
  5. Step 5: Solve for x
    x = 7,940,888.71/2,987.24
  6. Step 6: Final answer
    x = 2,658.27

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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.