Home / 1,681.68-2,320.66-935.62

Finding the Fourth Proportional to 1,681.68, 2,320.66 and 935.62

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Solution

The fourth proportional to 1,681.68, 2,320.66 and 935.62 is: 1,291.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,681.68 : 2,320.66 = 935.62 : x
  2. Step 2: Convert to fraction form
    1,681.68/2,320.66 = 935.62/x
  3. Step 3: Cross multiply
    1,681.68x = 2,320.66 × 935.62
  4. Step 4: Simplify right side
    1,681.68x = 2,171,247.77
  5. Step 5: Solve for x
    x = 2,171,247.77/1,681.68
  6. Step 6: Final answer
    x = 1,291.12

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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.