Home / 6,989.04-10,460.88-5,139.72

Finding the Fourth Proportional to 6,989.04, 10,460.88 and 5,139.72

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Solution

The fourth proportional to 6,989.04, 10,460.88 and 5,139.72 is: 7,692.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,989.04 : 10,460.88 = 5,139.72 : x
  2. Step 2: Convert to fraction form
    6,989.04/10,460.88 = 5,139.72/x
  3. Step 3: Cross multiply
    6,989.04x = 10,460.88 × 5,139.72
  4. Step 4: Simplify right side
    6,989.04x = 53,765,994.15
  5. Step 5: Solve for x
    x = 53,765,994.15/6,989.04
  6. Step 6: Final answer
    x = 7,692.90

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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.