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Finding the Fourth Proportional to 4,692.70, 7,040.08 and 1,572.80

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Solution

The fourth proportional to 4,692.70, 7,040.08 and 1,572.80 is: 2,359.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,692.70 : 7,040.08 = 1,572.80 : x
  2. Step 2: Convert to fraction form
    4,692.70/7,040.08 = 1,572.80/x
  3. Step 3: Cross multiply
    4,692.70x = 7,040.08 × 1,572.80
  4. Step 4: Simplify right side
    4,692.70x = 11,072,637.82
  5. Step 5: Solve for x
    x = 11,072,637.82/4,692.70
  6. Step 6: Final answer
    x = 2,359.55

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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.