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Finding the Fourth Proportional to 1,866.60, 2,574.60 and 1,203.18

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Solution

The fourth proportional to 1,866.60, 2,574.60 and 1,203.18 is: 1,659.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,866.60 : 2,574.60 = 1,203.18 : x
  2. Step 2: Convert to fraction form
    1,866.60/2,574.60 = 1,203.18/x
  3. Step 3: Cross multiply
    1,866.60x = 2,574.60 × 1,203.18
  4. Step 4: Simplify right side
    1,866.60x = 3,097,707.23
  5. Step 5: Solve for x
    x = 3,097,707.23/1,866.60
  6. Step 6: Final answer
    x = 1,659.55

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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.