Home / 2,802.40-3,863.70-1,916.66

Finding the Fourth Proportional to 2,802.40, 3,863.70 and 1,916.66

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Solution

The fourth proportional to 2,802.40, 3,863.70 and 1,916.66 is: 2,642.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,802.40 : 3,863.70 = 1,916.66 : x
  2. Step 2: Convert to fraction form
    2,802.40/3,863.70 = 1,916.66/x
  3. Step 3: Cross multiply
    2,802.40x = 3,863.70 × 1,916.66
  4. Step 4: Simplify right side
    2,802.40x = 7,405,408.90
  5. Step 5: Solve for x
    x = 7,405,408.90/2,802.40
  6. Step 6: Final answer
    x = 2,642.53

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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.