Home / 7,128.54-10,692.45-4,225.32

Finding the Fourth Proportional to 7,128.54, 10,692.45 and 4,225.32

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Solution

The fourth proportional to 7,128.54, 10,692.45 and 4,225.32 is: 6,337.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128.54 : 10,692.45 = 4,225.32 : x
  2. Step 2: Convert to fraction form
    7,128.54/10,692.45 = 4,225.32/x
  3. Step 3: Cross multiply
    7,128.54x = 10,692.45 × 4,225.32
  4. Step 4: Simplify right side
    7,128.54x = 45,179,022.83
  5. Step 5: Solve for x
    x = 45,179,022.83/7,128.54
  6. Step 6: Final answer
    x = 6,337.77

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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.