Home / 1,686.02-2,326.59-939.97

Finding the Fourth Proportional to 1,686.02, 2,326.59 and 939.97

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Solution

The fourth proportional to 1,686.02, 2,326.59 and 939.97 is: 1,297.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,686.02 : 2,326.59 = 939.97 : x
  2. Step 2: Convert to fraction form
    1,686.02/2,326.59 = 939.97/x
  3. Step 3: Cross multiply
    1,686.02x = 2,326.59 × 939.97
  4. Step 4: Simplify right side
    1,686.02x = 2,186,927.71
  5. Step 5: Solve for x
    x = 2,186,927.71/1,686.02
  6. Step 6: Final answer
    x = 1,297.10

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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.