Home / 7,030.40-10,540.80-2,647.20

Finding the Fourth Proportional to 7,030.40, 10,540.80 and 2,647.20

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Solution

The fourth proportional to 7,030.40, 10,540.80 and 2,647.20 is: 3,968.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,030.40 : 10,540.80 = 2,647.20 : x
  2. Step 2: Convert to fraction form
    7,030.40/10,540.80 = 2,647.20/x
  3. Step 3: Cross multiply
    7,030.40x = 10,540.80 × 2,647.20
  4. Step 4: Simplify right side
    7,030.40x = 27,903,605.76
  5. Step 5: Solve for x
    x = 27,903,605.76/7,030.40
  6. Step 6: Final answer
    x = 3,968.99

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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.