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Finding the Fourth Proportional to 3,048.66, 4,206.74 and 1,869.48

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Solution

The fourth proportional to 3,048.66, 4,206.74 and 1,869.48 is: 2,579.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,048.66 : 4,206.74 = 1,869.48 : x
  2. Step 2: Convert to fraction form
    3,048.66/4,206.74 = 1,869.48/x
  3. Step 3: Cross multiply
    3,048.66x = 4,206.74 × 1,869.48
  4. Step 4: Simplify right side
    3,048.66x = 7,864,406.95
  5. Step 5: Solve for x
    x = 7,864,406.95/3,048.66
  6. Step 6: Final answer
    x = 2,579.63

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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.