Home / 2,587.81-3,879.55-1,026.84

Finding the Fourth Proportional to 2,587.81, 3,879.55 and 1,026.84

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Solution

The fourth proportional to 2,587.81, 3,879.55 and 1,026.84 is: 1,539.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,587.81 : 3,879.55 = 1,026.84 : x
  2. Step 2: Convert to fraction form
    2,587.81/3,879.55 = 1,026.84/x
  3. Step 3: Cross multiply
    2,587.81x = 3,879.55 × 1,026.84
  4. Step 4: Simplify right side
    2,587.81x = 3,983,677.12
  5. Step 5: Solve for x
    x = 3,983,677.12/2,587.81
  6. Step 6: Final answer
    x = 1,539.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.