Home / 5,009.78-7,504.40-2,813.90

Finding the Fourth Proportional to 5,009.78, 7,504.40 and 2,813.90

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Solution

The fourth proportional to 5,009.78, 7,504.40 and 2,813.90 is: 4,215.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,009.78 : 7,504.40 = 2,813.90 : x
  2. Step 2: Convert to fraction form
    5,009.78/7,504.40 = 2,813.90/x
  3. Step 3: Cross multiply
    5,009.78x = 7,504.40 × 2,813.90
  4. Step 4: Simplify right side
    5,009.78x = 21,116,631.16
  5. Step 5: Solve for x
    x = 21,116,631.16/5,009.78
  6. Step 6: Final answer
    x = 4,215.08

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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.