Home / 2,669.90-3,683.86-1,916.06

Finding the Fourth Proportional to 2,669.90, 3,683.86 and 1,916.06

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Solution

The fourth proportional to 2,669.90, 3,683.86 and 1,916.06 is: 2,643.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,669.90 : 3,683.86 = 1,916.06 : x
  2. Step 2: Convert to fraction form
    2,669.90/3,683.86 = 1,916.06/x
  3. Step 3: Cross multiply
    2,669.90x = 3,683.86 × 1,916.06
  4. Step 4: Simplify right side
    2,669.90x = 7,058,496.79
  5. Step 5: Solve for x
    x = 7,058,496.79/2,669.90
  6. Step 6: Final answer
    x = 2,643.73

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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.