Home / 7,111.08-10,666.70-3,416.20

Finding the Fourth Proportional to 7,111.08, 10,666.70 and 3,416.20

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Solution

The fourth proportional to 7,111.08, 10,666.70 and 3,416.20 is: 5,124.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,111.08 : 10,666.70 = 3,416.20 : x
  2. Step 2: Convert to fraction form
    7,111.08/10,666.70 = 3,416.20/x
  3. Step 3: Cross multiply
    7,111.08x = 10,666.70 × 3,416.20
  4. Step 4: Simplify right side
    7,111.08x = 36,439,580.54
  5. Step 5: Solve for x
    x = 36,439,580.54/7,111.08
  6. Step 6: Final answer
    x = 5,124.34

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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.