Home / 2,079.87-2,870.20-1,135.67

Finding the Fourth Proportional to 2,079.87, 2,870.20 and 1,135.67

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Solution

The fourth proportional to 2,079.87, 2,870.20 and 1,135.67 is: 1,567.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079.87 : 2,870.20 = 1,135.67 : x
  2. Step 2: Convert to fraction form
    2,079.87/2,870.20 = 1,135.67/x
  3. Step 3: Cross multiply
    2,079.87x = 2,870.20 × 1,135.67
  4. Step 4: Simplify right side
    2,079.87x = 3,259,582.84
  5. Step 5: Solve for x
    x = 3,259,582.84/2,079.87
  6. Step 6: Final answer
    x = 1,567.21

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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.