Home / 8,670.21-13,003.74-2,428.67

Finding the Fourth Proportional to 8,670.21, 13,003.74 and 2,428.67

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Solution

The fourth proportional to 8,670.21, 13,003.74 and 2,428.67 is: 3,642.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,670.21 : 13,003.74 = 2,428.67 : x
  2. Step 2: Convert to fraction form
    8,670.21/13,003.74 = 2,428.67/x
  3. Step 3: Cross multiply
    8,670.21x = 13,003.74 × 2,428.67
  4. Step 4: Simplify right side
    8,670.21x = 31,581,728.21
  5. Step 5: Solve for x
    x = 31,581,728.21/8,670.21
  6. Step 6: Final answer
    x = 3,642.56

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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.