Home / 1,656.87-2,288.69-1,161.15

Finding the Fourth Proportional to 1,656.87, 2,288.69 and 1,161.15

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Solution

The fourth proportional to 1,656.87, 2,288.69 and 1,161.15 is: 1,603.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,656.87 : 2,288.69 = 1,161.15 : x
  2. Step 2: Convert to fraction form
    1,656.87/2,288.69 = 1,161.15/x
  3. Step 3: Cross multiply
    1,656.87x = 2,288.69 × 1,161.15
  4. Step 4: Simplify right side
    1,656.87x = 2,657,512.39
  5. Step 5: Solve for x
    x = 2,657,512.39/1,656.87
  6. Step 6: Final answer
    x = 1,603.94

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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.