Home / 1,730.68-2,386.29-1,398.07

Finding the Fourth Proportional to 1,730.68, 2,386.29 and 1,398.07

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Solution

The fourth proportional to 1,730.68, 2,386.29 and 1,398.07 is: 1,927.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,730.68 : 2,386.29 = 1,398.07 : x
  2. Step 2: Convert to fraction form
    1,730.68/2,386.29 = 1,398.07/x
  3. Step 3: Cross multiply
    1,730.68x = 2,386.29 × 1,398.07
  4. Step 4: Simplify right side
    1,730.68x = 3,336,208.69
  5. Step 5: Solve for x
    x = 3,336,208.69/1,730.68
  6. Step 6: Final answer
    x = 1,927.69

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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.