Home / 1,947.81-2,916.05-1,021.17

Finding the Fourth Proportional to 1,947.81, 2,916.05 and 1,021.17

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Solution

The fourth proportional to 1,947.81, 2,916.05 and 1,021.17 is: 1,528.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,947.81 : 2,916.05 = 1,021.17 : x
  2. Step 2: Convert to fraction form
    1,947.81/2,916.05 = 1,021.17/x
  3. Step 3: Cross multiply
    1,947.81x = 2,916.05 × 1,021.17
  4. Step 4: Simplify right side
    1,947.81x = 2,977,777.67
  5. Step 5: Solve for x
    x = 2,977,777.67/1,947.81
  6. Step 6: Final answer
    x = 1,528.78

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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.