Home / 1,729.36-2,386.59-983.39

Finding the Fourth Proportional to 1,729.36, 2,386.59 and 983.39

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Solution

The fourth proportional to 1,729.36, 2,386.59 and 983.39 is: 1,357.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,729.36 : 2,386.59 = 983.39 : x
  2. Step 2: Convert to fraction form
    1,729.36/2,386.59 = 983.39/x
  3. Step 3: Cross multiply
    1,729.36x = 2,386.59 × 983.39
  4. Step 4: Simplify right side
    1,729.36x = 2,346,947.51
  5. Step 5: Solve for x
    x = 2,346,947.51/1,729.36
  6. Step 6: Final answer
    x = 1,357.12

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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.