Home / 2,987.19-4,479.75-1,038.96

Finding the Fourth Proportional to 2,987.19, 4,479.75 and 1,038.96

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Solution

The fourth proportional to 2,987.19, 4,479.75 and 1,038.96 is: 1,558.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.19 : 4,479.75 = 1,038.96 : x
  2. Step 2: Convert to fraction form
    2,987.19/4,479.75 = 1,038.96/x
  3. Step 3: Cross multiply
    2,987.19x = 4,479.75 × 1,038.96
  4. Step 4: Simplify right side
    2,987.19x = 4,654,281.06
  5. Step 5: Solve for x
    x = 4,654,281.06/2,987.19
  6. Step 6: Final answer
    x = 1,558.08

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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.