Home / 1,775.04-2,449.60-989.08

Finding the Fourth Proportional to 1,775.04, 2,449.60 and 989.08

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Solution

The fourth proportional to 1,775.04, 2,449.60 and 989.08 is: 1,364.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,775.04 : 2,449.60 = 989.08 : x
  2. Step 2: Convert to fraction form
    1,775.04/2,449.60 = 989.08/x
  3. Step 3: Cross multiply
    1,775.04x = 2,449.60 × 989.08
  4. Step 4: Simplify right side
    1,775.04x = 2,422,850.37
  5. Step 5: Solve for x
    x = 2,422,850.37/1,775.04
  6. Step 6: Final answer
    x = 1,364.96

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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.