Home / 1,985.64-2,738.52-1,723.20

Finding the Fourth Proportional to 1,985.64, 2,738.52 and 1,723.20

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Solution

The fourth proportional to 1,985.64, 2,738.52 and 1,723.20 is: 2,376.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985.64 : 2,738.52 = 1,723.20 : x
  2. Step 2: Convert to fraction form
    1,985.64/2,738.52 = 1,723.20/x
  3. Step 3: Cross multiply
    1,985.64x = 2,738.52 × 1,723.20
  4. Step 4: Simplify right side
    1,985.64x = 4,719,017.66
  5. Step 5: Solve for x
    x = 4,719,017.66/1,985.64
  6. Step 6: Final answer
    x = 2,376.57

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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.