Home / 1,547.69-2,135.80-849.07

Finding the Fourth Proportional to 1,547.69, 2,135.80 and 849.07

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Solution

The fourth proportional to 1,547.69, 2,135.80 and 849.07 is: 1,171.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,547.69 : 2,135.80 = 849.07 : x
  2. Step 2: Convert to fraction form
    1,547.69/2,135.80 = 849.07/x
  3. Step 3: Cross multiply
    1,547.69x = 2,135.80 × 849.07
  4. Step 4: Simplify right side
    1,547.69x = 1,813,443.71
  5. Step 5: Solve for x
    x = 1,813,443.71/1,547.69
  6. Step 6: Final answer
    x = 1,171.71

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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.