Home / 1,686.36-2,529.78-1,036.20

Finding the Fourth Proportional to 1,686.36, 2,529.78 and 1,036.20

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Solution

The fourth proportional to 1,686.36, 2,529.78 and 1,036.20 is: 1,554.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,686.36 : 2,529.78 = 1,036.20 : x
  2. Step 2: Convert to fraction form
    1,686.36/2,529.78 = 1,036.20/x
  3. Step 3: Cross multiply
    1,686.36x = 2,529.78 × 1,036.20
  4. Step 4: Simplify right side
    1,686.36x = 2,621,358.04
  5. Step 5: Solve for x
    x = 2,621,358.04/1,686.36
  6. Step 6: Final answer
    x = 1,554.45

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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.