Home / 2,657.36-3,985.08-1,118.48

Finding the Fourth Proportional to 2,657.36, 3,985.08 and 1,118.48

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Solution

The fourth proportional to 2,657.36, 3,985.08 and 1,118.48 is: 1,677.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,657.36 : 3,985.08 = 1,118.48 : x
  2. Step 2: Convert to fraction form
    2,657.36/3,985.08 = 1,118.48/x
  3. Step 3: Cross multiply
    2,657.36x = 3,985.08 × 1,118.48
  4. Step 4: Simplify right side
    2,657.36x = 4,457,232.28
  5. Step 5: Solve for x
    x = 4,457,232.28/2,657.36
  6. Step 6: Final answer
    x = 1,677.32

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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.