Home / 2,069.60-2,855.96-1,138.10

Finding the Fourth Proportional to 2,069.60, 2,855.96 and 1,138.10

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Solution

The fourth proportional to 2,069.60, 2,855.96 and 1,138.10 is: 1,570.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,069.60 : 2,855.96 = 1,138.10 : x
  2. Step 2: Convert to fraction form
    2,069.60/2,855.96 = 1,138.10/x
  3. Step 3: Cross multiply
    2,069.60x = 2,855.96 × 1,138.10
  4. Step 4: Simplify right side
    2,069.60x = 3,250,368.08
  5. Step 5: Solve for x
    x = 3,250,368.08/2,069.60
  6. Step 6: Final answer
    x = 1,570.53

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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.