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Finding the Fourth Proportional to 1,857.66, 2,788.92 and 1,570.92

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Solution

The fourth proportional to 1,857.66, 2,788.92 and 1,570.92 is: 2,358.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,857.66 : 2,788.92 = 1,570.92 : x
  2. Step 2: Convert to fraction form
    1,857.66/2,788.92 = 1,570.92/x
  3. Step 3: Cross multiply
    1,857.66x = 2,788.92 × 1,570.92
  4. Step 4: Simplify right side
    1,857.66x = 4,381,170.21
  5. Step 5: Solve for x
    x = 4,381,170.21/1,857.66
  6. Step 6: Final answer
    x = 2,358.43

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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.