Home / 1,680.05-2,520.08-1,570.70

Finding the Fourth Proportional to 1,680.05, 2,520.08 and 1,570.70

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Solution

The fourth proportional to 1,680.05, 2,520.08 and 1,570.70 is: 2,356.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680.05 : 2,520.08 = 1,570.70 : x
  2. Step 2: Convert to fraction form
    1,680.05/2,520.08 = 1,570.70/x
  3. Step 3: Cross multiply
    1,680.05x = 2,520.08 × 1,570.70
  4. Step 4: Simplify right side
    1,680.05x = 3,958,289.66
  5. Step 5: Solve for x
    x = 3,958,289.66/1,680.05
  6. Step 6: Final answer
    x = 2,356.05

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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.