Home / 3,130.81-4,692.92-1,485.38

Finding the Fourth Proportional to 3,130.81, 4,692.92 and 1,485.38

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Solution

The fourth proportional to 3,130.81, 4,692.92 and 1,485.38 is: 2,226.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.81 : 4,692.92 = 1,485.38 : x
  2. Step 2: Convert to fraction form
    3,130.81/4,692.92 = 1,485.38/x
  3. Step 3: Cross multiply
    3,130.81x = 4,692.92 × 1,485.38
  4. Step 4: Simplify right side
    3,130.81x = 6,970,769.51
  5. Step 5: Solve for x
    x = 6,970,769.51/3,130.81
  6. Step 6: Final answer
    x = 2,226.51

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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.