Home / 1,695.51-2,538.59-1,283.40

Finding the Fourth Proportional to 1,695.51, 2,538.59 and 1,283.40

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Solution

The fourth proportional to 1,695.51, 2,538.59 and 1,283.40 is: 1,921.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,695.51 : 2,538.59 = 1,283.40 : x
  2. Step 2: Convert to fraction form
    1,695.51/2,538.59 = 1,283.40/x
  3. Step 3: Cross multiply
    1,695.51x = 2,538.59 × 1,283.40
  4. Step 4: Simplify right side
    1,695.51x = 3,258,019.99
  5. Step 5: Solve for x
    x = 3,258,019.99/1,695.51
  6. Step 6: Final answer
    x = 1,921.56

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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.