Home / 7,127.75-10,688.88-2,969.72

Finding the Fourth Proportional to 7,127.75, 10,688.88 and 2,969.72

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Solution

The fourth proportional to 7,127.75, 10,688.88 and 2,969.72 is: 4,453.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,127.75 : 10,688.88 = 2,969.72 : x
  2. Step 2: Convert to fraction form
    7,127.75/10,688.88 = 2,969.72/x
  3. Step 3: Cross multiply
    7,127.75x = 10,688.88 × 2,969.72
  4. Step 4: Simplify right side
    7,127.75x = 31,742,980.71
  5. Step 5: Solve for x
    x = 31,742,980.71/7,127.75
  6. Step 6: Final answer
    x = 4,453.44

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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.