Home / 1,916.94-2,645.25-1,120.14

Finding the Fourth Proportional to 1,916.94, 2,645.25 and 1,120.14

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Solution

The fourth proportional to 1,916.94, 2,645.25 and 1,120.14 is: 1,545.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916.94 : 2,645.25 = 1,120.14 : x
  2. Step 2: Convert to fraction form
    1,916.94/2,645.25 = 1,120.14/x
  3. Step 3: Cross multiply
    1,916.94x = 2,645.25 × 1,120.14
  4. Step 4: Simplify right side
    1,916.94x = 2,963,050.34
  5. Step 5: Solve for x
    x = 2,963,050.34/1,916.94
  6. Step 6: Final answer
    x = 1,545.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.