Home / 2,666.50-3,680.30-1,547.68

Finding the Fourth Proportional to 2,666.50, 3,680.30 and 1,547.68

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Solution

The fourth proportional to 2,666.50, 3,680.30 and 1,547.68 is: 2,136.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,666.50 : 3,680.30 = 1,547.68 : x
  2. Step 2: Convert to fraction form
    2,666.50/3,680.30 = 1,547.68/x
  3. Step 3: Cross multiply
    2,666.50x = 3,680.30 × 1,547.68
  4. Step 4: Simplify right side
    2,666.50x = 5,695,926.70
  5. Step 5: Solve for x
    x = 5,695,926.70/2,666.50
  6. Step 6: Final answer
    x = 2,136.11

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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.