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Finding the Fourth Proportional to 2,891.86, 4,328.88 and 1,848.40

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Solution

The fourth proportional to 2,891.86, 4,328.88 and 1,848.40 is: 2,766.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,891.86 : 4,328.88 = 1,848.40 : x
  2. Step 2: Convert to fraction form
    2,891.86/4,328.88 = 1,848.40/x
  3. Step 3: Cross multiply
    2,891.86x = 4,328.88 × 1,848.40
  4. Step 4: Simplify right side
    2,891.86x = 8,001,501.79
  5. Step 5: Solve for x
    x = 8,001,501.79/2,891.86
  6. Step 6: Final answer
    x = 2,766.90

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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.