Home / 1,547.67-2,320.70-1,108.65

Finding the Fourth Proportional to 1,547.67, 2,320.70 and 1,108.65

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Solution

The fourth proportional to 1,547.67, 2,320.70 and 1,108.65 is: 1,662.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,547.67 : 2,320.70 = 1,108.65 : x
  2. Step 2: Convert to fraction form
    1,547.67/2,320.70 = 1,108.65/x
  3. Step 3: Cross multiply
    1,547.67x = 2,320.70 × 1,108.65
  4. Step 4: Simplify right side
    1,547.67x = 2,572,838.51
  5. Step 5: Solve for x
    x = 2,572,838.51/1,547.67
  6. Step 6: Final answer
    x = 1,662.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.