Home / 1,875.15-2,587.82-1,129.41

Finding the Fourth Proportional to 1,875.15, 2,587.82 and 1,129.41

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Solution

The fourth proportional to 1,875.15, 2,587.82 and 1,129.41 is: 1,558.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,875.15 : 2,587.82 = 1,129.41 : x
  2. Step 2: Convert to fraction form
    1,875.15/2,587.82 = 1,129.41/x
  3. Step 3: Cross multiply
    1,875.15x = 2,587.82 × 1,129.41
  4. Step 4: Simplify right side
    1,875.15x = 2,922,704.14
  5. Step 5: Solve for x
    x = 2,922,704.14/1,875.15
  6. Step 6: Final answer
    x = 1,558.65

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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.