Home / 1,916.30-2,645.60-1,254.30

Finding the Fourth Proportional to 1,916.30, 2,645.60 and 1,254.30

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Solution

The fourth proportional to 1,916.30, 2,645.60 and 1,254.30 is: 1,731.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916.30 : 2,645.60 = 1,254.30 : x
  2. Step 2: Convert to fraction form
    1,916.30/2,645.60 = 1,254.30/x
  3. Step 3: Cross multiply
    1,916.30x = 2,645.60 × 1,254.30
  4. Step 4: Simplify right side
    1,916.30x = 3,318,376.08
  5. Step 5: Solve for x
    x = 3,318,376.08/1,916.30
  6. Step 6: Final answer
    x = 1,731.66

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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.