Home / 1,728.15-2,386.02-1,329.11

Finding the Fourth Proportional to 1,728.15, 2,386.02 and 1,329.11

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Solution

The fourth proportional to 1,728.15, 2,386.02 and 1,329.11 is: 1,835.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,728.15 : 2,386.02 = 1,329.11 : x
  2. Step 2: Convert to fraction form
    1,728.15/2,386.02 = 1,329.11/x
  3. Step 3: Cross multiply
    1,728.15x = 2,386.02 × 1,329.11
  4. Step 4: Simplify right side
    1,728.15x = 3,171,271.11
  5. Step 5: Solve for x
    x = 3,171,271.11/1,728.15
  6. Step 6: Final answer
    x = 1,835.07

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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.