Home / 1,916.93-2,645.20-1,077.57

Finding the Fourth Proportional to 1,916.93, 2,645.20 and 1,077.57

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Solution

The fourth proportional to 1,916.93, 2,645.20 and 1,077.57 is: 1,486.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916.93 : 2,645.20 = 1,077.57 : x
  2. Step 2: Convert to fraction form
    1,916.93/2,645.20 = 1,077.57/x
  3. Step 3: Cross multiply
    1,916.93x = 2,645.20 × 1,077.57
  4. Step 4: Simplify right side
    1,916.93x = 2,850,388.16
  5. Step 5: Solve for x
    x = 2,850,388.16/1,916.93
  6. Step 6: Final answer
    x = 1,486.95

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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.