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Finding the Fourth Proportional to 2,866.59, 3,955.83 and 1,590.47

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Solution

The fourth proportional to 2,866.59, 3,955.83 and 1,590.47 is: 2,194.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,866.59 : 3,955.83 = 1,590.47 : x
  2. Step 2: Convert to fraction form
    2,866.59/3,955.83 = 1,590.47/x
  3. Step 3: Cross multiply
    2,866.59x = 3,955.83 × 1,590.47
  4. Step 4: Simplify right side
    2,866.59x = 6,291,628.94
  5. Step 5: Solve for x
    x = 6,291,628.94/2,866.59
  6. Step 6: Final answer
    x = 2,194.81

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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.