Home / 1,875.42-2,586.87-1,286.28

Finding the Fourth Proportional to 1,875.42, 2,586.87 and 1,286.28

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Solution

The fourth proportional to 1,875.42, 2,586.87 and 1,286.28 is: 1,774.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,875.42 : 2,586.87 = 1,286.28 : x
  2. Step 2: Convert to fraction form
    1,875.42/2,586.87 = 1,286.28/x
  3. Step 3: Cross multiply
    1,875.42x = 2,586.87 × 1,286.28
  4. Step 4: Simplify right side
    1,875.42x = 3,327,439.14
  5. Step 5: Solve for x
    x = 3,327,439.14/1,875.42
  6. Step 6: Final answer
    x = 1,774.24

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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.