Home / 1,873.90-2,586.20-1,128.23

Finding the Fourth Proportional to 1,873.90, 2,586.20 and 1,128.23

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Solution

The fourth proportional to 1,873.90, 2,586.20 and 1,128.23 is: 1,557.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,873.90 : 2,586.20 = 1,128.23 : x
  2. Step 2: Convert to fraction form
    1,873.90/2,586.20 = 1,128.23/x
  3. Step 3: Cross multiply
    1,873.90x = 2,586.20 × 1,128.23
  4. Step 4: Simplify right side
    1,873.90x = 2,917,822.78
  5. Step 5: Solve for x
    x = 2,917,822.78/1,873.90
  6. Step 6: Final answer
    x = 1,557.09

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Half scale
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Double scale
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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.