Home / 1,729.08-2,386.16-983.06

Finding the Fourth Proportional to 1,729.08, 2,386.16 and 983.06

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Solution

The fourth proportional to 1,729.08, 2,386.16 and 983.06 is: 1,356.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,729.08 : 2,386.16 = 983.06 : x
  2. Step 2: Convert to fraction form
    1,729.08/2,386.16 = 983.06/x
  3. Step 3: Cross multiply
    1,729.08x = 2,386.16 × 983.06
  4. Step 4: Simplify right side
    1,729.08x = 2,345,738.45
  5. Step 5: Solve for x
    x = 2,345,738.45/1,729.08
  6. Step 6: Final answer
    x = 1,356.64

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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.