Home / 1,647.64-2,272.89-1,116.55

Finding the Fourth Proportional to 1,647.64, 2,272.89 and 1,116.55

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Solution

The fourth proportional to 1,647.64, 2,272.89 and 1,116.55 is: 1,540.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,647.64 : 2,272.89 = 1,116.55 : x
  2. Step 2: Convert to fraction form
    1,647.64/2,272.89 = 1,116.55/x
  3. Step 3: Cross multiply
    1,647.64x = 2,272.89 × 1,116.55
  4. Step 4: Simplify right side
    1,647.64x = 2,537,802.36
  5. Step 5: Solve for x
    x = 2,537,802.36/1,647.64
  6. Step 6: Final answer
    x = 1,540.26

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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.