Home / 2,616.32-3,916.80-1,643.52

Finding the Fourth Proportional to 2,616.32, 3,916.80 and 1,643.52

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Solution

The fourth proportional to 2,616.32, 3,916.80 and 1,643.52 is: 2,460.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,616.32 : 3,916.80 = 1,643.52 : x
  2. Step 2: Convert to fraction form
    2,616.32/3,916.80 = 1,643.52/x
  3. Step 3: Cross multiply
    2,616.32x = 3,916.80 × 1,643.52
  4. Step 4: Simplify right side
    2,616.32x = 6,437,339.14
  5. Step 5: Solve for x
    x = 6,437,339.14/2,616.32
  6. Step 6: Final answer
    x = 2,460.46

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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.