Home / 5,378.77-7,417.54-3,489.67

Finding the Fourth Proportional to 5,378.77, 7,417.54 and 3,489.67

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Solution

The fourth proportional to 5,378.77, 7,417.54 and 3,489.67 is: 4,812.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,378.77 : 7,417.54 = 3,489.67 : x
  2. Step 2: Convert to fraction form
    5,378.77/7,417.54 = 3,489.67/x
  3. Step 3: Cross multiply
    5,378.77x = 7,417.54 × 3,489.67
  4. Step 4: Simplify right side
    5,378.77x = 25,884,766.81
  5. Step 5: Solve for x
    x = 25,884,766.81/5,378.77
  6. Step 6: Final answer
    x = 4,812.40

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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.