Home / 1,916.75-2,875.42-618.35

Finding the Fourth Proportional to 1,916.75, 2,875.42 and 618.35

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Solution

The fourth proportional to 1,916.75, 2,875.42 and 618.35 is: 927.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916.75 : 2,875.42 = 618.35 : x
  2. Step 2: Convert to fraction form
    1,916.75/2,875.42 = 618.35/x
  3. Step 3: Cross multiply
    1,916.75x = 2,875.42 × 618.35
  4. Step 4: Simplify right side
    1,916.75x = 1,777,998.49
  5. Step 5: Solve for x
    x = 1,777,998.49/1,916.75
  6. Step 6: Final answer
    x = 927.61

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1.5x scale

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.