Home / 7,128.02-10,692.21-3,378.92

Finding the Fourth Proportional to 7,128.02, 10,692.21 and 3,378.92

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Solution

The fourth proportional to 7,128.02, 10,692.21 and 3,378.92 is: 5,068.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128.02 : 10,692.21 = 3,378.92 : x
  2. Step 2: Convert to fraction form
    7,128.02/10,692.21 = 3,378.92/x
  3. Step 3: Cross multiply
    7,128.02x = 10,692.21 × 3,378.92
  4. Step 4: Simplify right side
    7,128.02x = 36,128,068.75
  5. Step 5: Solve for x
    x = 36,128,068.75/7,128.02
  6. Step 6: Final answer
    x = 5,068.46

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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.