Home / 2,986.47-4,479.75-1,038.74

Finding the Fourth Proportional to 2,986.47, 4,479.75 and 1,038.74

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Solution

The fourth proportional to 2,986.47, 4,479.75 and 1,038.74 is: 1,558.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.47 : 4,479.75 = 1,038.74 : x
  2. Step 2: Convert to fraction form
    2,986.47/4,479.75 = 1,038.74/x
  3. Step 3: Cross multiply
    2,986.47x = 4,479.75 × 1,038.74
  4. Step 4: Simplify right side
    2,986.47x = 4,653,295.52
  5. Step 5: Solve for x
    x = 4,653,295.52/2,986.47
  6. Step 6: Final answer
    x = 1,558.13

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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.