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Finding the Fourth Proportional to 1,955.72, 2,700.70 and 1,258.32

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Solution

The fourth proportional to 1,955.72, 2,700.70 and 1,258.32 is: 1,737.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,955.72 : 2,700.70 = 1,258.32 : x
  2. Step 2: Convert to fraction form
    1,955.72/2,700.70 = 1,258.32/x
  3. Step 3: Cross multiply
    1,955.72x = 2,700.70 × 1,258.32
  4. Step 4: Simplify right side
    1,955.72x = 3,398,344.82
  5. Step 5: Solve for x
    x = 3,398,344.82/1,955.72
  6. Step 6: Final answer
    x = 1,737.64

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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.