Home / 7,106.87-9,807.28-4,122.51

Finding the Fourth Proportional to 7,106.87, 9,807.28 and 4,122.51

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Solution

The fourth proportional to 7,106.87, 9,807.28 and 4,122.51 is: 5,688.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,106.87 : 9,807.28 = 4,122.51 : x
  2. Step 2: Convert to fraction form
    7,106.87/9,807.28 = 4,122.51/x
  3. Step 3: Cross multiply
    7,106.87x = 9,807.28 × 4,122.51
  4. Step 4: Simplify right side
    7,106.87x = 40,430,609.87
  5. Step 5: Solve for x
    x = 40,430,609.87/7,106.87
  6. Step 6: Final answer
    x = 5,688.95

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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.