Home / 5,128.04-7,692.64-1,618.55

Finding the Fourth Proportional to 5,128.04, 7,692.64 and 1,618.55

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Solution

The fourth proportional to 5,128.04, 7,692.64 and 1,618.55 is: 2,428.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.04 : 7,692.64 = 1,618.55 : x
  2. Step 2: Convert to fraction form
    5,128.04/7,692.64 = 1,618.55/x
  3. Step 3: Cross multiply
    5,128.04x = 7,692.64 × 1,618.55
  4. Step 4: Simplify right side
    5,128.04x = 12,450,875.92
  5. Step 5: Solve for x
    x = 12,450,875.92/5,128.04
  6. Step 6: Final answer
    x = 2,428.00

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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.