Home / 1,778.16-2,440.81-1,577.28

Finding the Fourth Proportional to 1,778.16, 2,440.81 and 1,577.28

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Solution

The fourth proportional to 1,778.16, 2,440.81 and 1,577.28 is: 2,165.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,778.16 : 2,440.81 = 1,577.28 : x
  2. Step 2: Convert to fraction form
    1,778.16/2,440.81 = 1,577.28/x
  3. Step 3: Cross multiply
    1,778.16x = 2,440.81 × 1,577.28
  4. Step 4: Simplify right side
    1,778.16x = 3,849,840.80
  5. Step 5: Solve for x
    x = 3,849,840.80/1,778.16
  6. Step 6: Final answer
    x = 2,165.07

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.