Home / 1,729.65-2,386.95-943.72

Finding the Fourth Proportional to 1,729.65, 2,386.95 and 943.72

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Solution

The fourth proportional to 1,729.65, 2,386.95 and 943.72 is: 1,302.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,729.65 : 2,386.95 = 943.72 : x
  2. Step 2: Convert to fraction form
    1,729.65/2,386.95 = 943.72/x
  3. Step 3: Cross multiply
    1,729.65x = 2,386.95 × 943.72
  4. Step 4: Simplify right side
    1,729.65x = 2,252,607.74
  5. Step 5: Solve for x
    x = 2,252,607.74/1,729.65
  6. Step 6: Final answer
    x = 1,302.35

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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.