Home / 1,947.13-2,920.70-1,657.99

Finding the Fourth Proportional to 1,947.13, 2,920.70 and 1,657.99

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Solution

The fourth proportional to 1,947.13, 2,920.70 and 1,657.99 is: 2,486.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,947.13 : 2,920.70 = 1,657.99 : x
  2. Step 2: Convert to fraction form
    1,947.13/2,920.70 = 1,657.99/x
  3. Step 3: Cross multiply
    1,947.13x = 2,920.70 × 1,657.99
  4. Step 4: Simplify right side
    1,947.13x = 4,842,491.39
  5. Step 5: Solve for x
    x = 4,842,491.39/1,947.13
  6. Step 6: Final answer
    x = 2,486.99

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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.