Home / 2,666.81-3,680.36-1,547.34

Finding the Fourth Proportional to 2,666.81, 3,680.36 and 1,547.34

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Solution

The fourth proportional to 2,666.81, 3,680.36 and 1,547.34 is: 2,135.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,666.81 : 3,680.36 = 1,547.34 : x
  2. Step 2: Convert to fraction form
    2,666.81/3,680.36 = 1,547.34/x
  3. Step 3: Cross multiply
    2,666.81x = 3,680.36 × 1,547.34
  4. Step 4: Simplify right side
    2,666.81x = 5,694,760.51
  5. Step 5: Solve for x
    x = 5,694,760.51/2,666.81
  6. Step 6: Final answer
    x = 2,135.42

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1.5x scale

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.