Home / 2,910.95-4,359.65-2,129.00

Finding the Fourth Proportional to 2,910.95, 4,359.65 and 2,129.00

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Solution

The fourth proportional to 2,910.95, 4,359.65 and 2,129.00 is: 3,188.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,910.95 : 4,359.65 = 2,129.00 : x
  2. Step 2: Convert to fraction form
    2,910.95/4,359.65 = 2,129.00/x
  3. Step 3: Cross multiply
    2,910.95x = 4,359.65 × 2,129.00
  4. Step 4: Simplify right side
    2,910.95x = 9,281,678.76
  5. Step 5: Solve for x
    x = 9,281,678.76/2,910.95
  6. Step 6: Final answer
    x = 3,188.54

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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.