Home / 2,220.01-3,330.18-638.67

Finding the Fourth Proportional to 2,220.01, 3,330.18 and 638.67

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Solution

The fourth proportional to 2,220.01, 3,330.18 and 638.67 is: 958.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.01 : 3,330.18 = 638.67 : x
  2. Step 2: Convert to fraction form
    2,220.01/3,330.18 = 638.67/x
  3. Step 3: Cross multiply
    2,220.01x = 3,330.18 × 638.67
  4. Step 4: Simplify right side
    2,220.01x = 2,126,881.61
  5. Step 5: Solve for x
    x = 2,126,881.61/2,220.01
  6. Step 6: Final answer
    x = 958.05

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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.