Home / 1,681.05-2,319.85-935.02

Finding the Fourth Proportional to 1,681.05, 2,319.85 and 935.02

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Solution

The fourth proportional to 1,681.05, 2,319.85 and 935.02 is: 1,290.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,681.05 : 2,319.85 = 935.02 : x
  2. Step 2: Convert to fraction form
    1,681.05/2,319.85 = 935.02/x
  3. Step 3: Cross multiply
    1,681.05x = 2,319.85 × 935.02
  4. Step 4: Simplify right side
    1,681.05x = 2,169,097.17
  5. Step 5: Solve for x
    x = 2,169,097.17/1,681.05
  6. Step 6: Final answer
    x = 1,290.32

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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.