Home / 2,926.08-4,387.95-1,386

Finding the Fourth Proportional to 2,926.08, 4,387.95 and 1,386

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Solution

The fourth proportional to 2,926.08, 4,387.95 and 1,386 is: 2,078.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,926.08 : 4,387.95 = 1,386 : x
  2. Step 2: Convert to fraction form
    2,926.08/4,387.95 = 1,386/x
  3. Step 3: Cross multiply
    2,926.08x = 4,387.95 × 1,386
  4. Step 4: Simplify right side
    2,926.08x = 6,081,698.70
  5. Step 5: Solve for x
    x = 6,081,698.70/2,926.08
  6. Step 6: Final answer
    x = 2,078.45

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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.