Home / 8,219.72-11,340.08-5,030.45

Finding the Fourth Proportional to 8,219.72, 11,340.08 and 5,030.45

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Solution

The fourth proportional to 8,219.72, 11,340.08 and 5,030.45 is: 6,940.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,219.72 : 11,340.08 = 5,030.45 : x
  2. Step 2: Convert to fraction form
    8,219.72/11,340.08 = 5,030.45/x
  3. Step 3: Cross multiply
    8,219.72x = 11,340.08 × 5,030.45
  4. Step 4: Simplify right side
    8,219.72x = 57,045,705.44
  5. Step 5: Solve for x
    x = 57,045,705.44/8,219.72
  6. Step 6: Final answer
    x = 6,940.10

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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.