Home / 7,284.60-10,918.80-3,123.90

Finding the Fourth Proportional to 7,284.60, 10,918.80 and 3,123.90

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Solution

The fourth proportional to 7,284.60, 10,918.80 and 3,123.90 is: 4,682.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,284.60 : 10,918.80 = 3,123.90 : x
  2. Step 2: Convert to fraction form
    7,284.60/10,918.80 = 3,123.90/x
  3. Step 3: Cross multiply
    7,284.60x = 10,918.80 × 3,123.90
  4. Step 4: Simplify right side
    7,284.60x = 34,109,239.32
  5. Step 5: Solve for x
    x = 34,109,239.32/7,284.60
  6. Step 6: Final answer
    x = 4,682.38

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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.