Home / 7,820.46-11,720.85-5,587.67

Finding the Fourth Proportional to 7,820.46, 11,720.85 and 5,587.67

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Solution

The fourth proportional to 7,820.46, 11,720.85 and 5,587.67 is: 8,374.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,820.46 : 11,720.85 = 5,587.67 : x
  2. Step 2: Convert to fraction form
    7,820.46/11,720.85 = 5,587.67/x
  3. Step 3: Cross multiply
    7,820.46x = 11,720.85 × 5,587.67
  4. Step 4: Simplify right side
    7,820.46x = 65,492,183.32
  5. Step 5: Solve for x
    x = 65,492,183.32/7,820.46
  6. Step 6: Final answer
    x = 8,374.47

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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.