Home / 7,189.40-10,785.63-4,070.87

Finding the Fourth Proportional to 7,189.40, 10,785.63 and 4,070.87

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Solution

The fourth proportional to 7,189.40, 10,785.63 and 4,070.87 is: 6,107.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,189.40 : 10,785.63 = 4,070.87 : x
  2. Step 2: Convert to fraction form
    7,189.40/10,785.63 = 4,070.87/x
  3. Step 3: Cross multiply
    7,189.40x = 10,785.63 × 4,070.87
  4. Step 4: Simplify right side
    7,189.40x = 43,906,897.60
  5. Step 5: Solve for x
    x = 43,906,897.60/7,189.40
  6. Step 6: Final answer
    x = 6,107.17

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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.