Home / 7,125.36-10,639.38-6,380.16

Finding the Fourth Proportional to 7,125.36, 10,639.38 and 6,380.16

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Solution

The fourth proportional to 7,125.36, 10,639.38 and 6,380.16 is: 9,526.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,125.36 : 10,639.38 = 6,380.16 : x
  2. Step 2: Convert to fraction form
    7,125.36/10,639.38 = 6,380.16/x
  3. Step 3: Cross multiply
    7,125.36x = 10,639.38 × 6,380.16
  4. Step 4: Simplify right side
    7,125.36x = 67,880,946.70
  5. Step 5: Solve for x
    x = 67,880,946.70/7,125.36
  6. Step 6: Final answer
    x = 9,526.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.