Home / 7,520.48-10,378.43-4,117.81

Finding the Fourth Proportional to 7,520.48, 10,378.43 and 4,117.81

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Solution

The fourth proportional to 7,520.48, 10,378.43 and 4,117.81 is: 5,682.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,520.48 : 10,378.43 = 4,117.81 : x
  2. Step 2: Convert to fraction form
    7,520.48/10,378.43 = 4,117.81/x
  3. Step 3: Cross multiply
    7,520.48x = 10,378.43 × 4,117.81
  4. Step 4: Simplify right side
    7,520.48x = 42,736,420.39
  5. Step 5: Solve for x
    x = 42,736,420.39/7,520.48
  6. Step 6: Final answer
    x = 5,682.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.