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Finding the Fourth Proportional to 2,666.72, 3,995.29 and 1,570.49

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Solution

The fourth proportional to 2,666.72, 3,995.29 and 1,570.49 is: 2,352.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,666.72 : 3,995.29 = 1,570.49 : x
  2. Step 2: Convert to fraction form
    2,666.72/3,995.29 = 1,570.49/x
  3. Step 3: Cross multiply
    2,666.72x = 3,995.29 × 1,570.49
  4. Step 4: Simplify right side
    2,666.72x = 6,274,559.96
  5. Step 5: Solve for x
    x = 6,274,559.96/2,666.72
  6. Step 6: Final answer
    x = 2,352.91

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1.5x scale

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.