Home / 5,386.76-8,087.34-5,211.80

Finding the Fourth Proportional to 5,386.76, 8,087.34 and 5,211.80

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Solution

The fourth proportional to 5,386.76, 8,087.34 and 5,211.80 is: 7,824.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,386.76 : 8,087.34 = 5,211.80 : x
  2. Step 2: Convert to fraction form
    5,386.76/8,087.34 = 5,211.80/x
  3. Step 3: Cross multiply
    5,386.76x = 8,087.34 × 5,211.80
  4. Step 4: Simplify right side
    5,386.76x = 42,149,598.61
  5. Step 5: Solve for x
    x = 42,149,598.61/5,386.76
  6. Step 6: Final answer
    x = 7,824.67

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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.