Home / 6,870.21-10,306.67-2,190.06

Finding the Fourth Proportional to 6,870.21, 10,306.67 and 2,190.06

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Solution

The fourth proportional to 6,870.21, 10,306.67 and 2,190.06 is: 3,285.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,870.21 : 10,306.67 = 2,190.06 : x
  2. Step 2: Convert to fraction form
    6,870.21/10,306.67 = 2,190.06/x
  3. Step 3: Cross multiply
    6,870.21x = 10,306.67 × 2,190.06
  4. Step 4: Simplify right side
    6,870.21x = 22,572,225.70
  5. Step 5: Solve for x
    x = 22,572,225.70/6,870.21
  6. Step 6: Final answer
    x = 3,285.52

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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.