Home / 7,106.48-9,807.88-4,121.69

Finding the Fourth Proportional to 7,106.48, 9,807.88 and 4,121.69

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Solution

The fourth proportional to 7,106.48, 9,807.88 and 4,121.69 is: 5,688.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,106.48 : 9,807.88 = 4,121.69 : x
  2. Step 2: Convert to fraction form
    7,106.48/9,807.88 = 4,121.69/x
  3. Step 3: Cross multiply
    7,106.48x = 9,807.88 × 4,121.69
  4. Step 4: Simplify right side
    7,106.48x = 40,425,077.70
  5. Step 5: Solve for x
    x = 40,425,077.70/7,106.48
  6. Step 6: Final answer
    x = 5,688.48

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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.