Home / 1,667.12-2,500.80-571.60

Finding the Fourth Proportional to 1,667.12, 2,500.80 and 571.60

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Solution

The fourth proportional to 1,667.12, 2,500.80 and 571.60 is: 857.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,667.12 : 2,500.80 = 571.60 : x
  2. Step 2: Convert to fraction form
    1,667.12/2,500.80 = 571.60/x
  3. Step 3: Cross multiply
    1,667.12x = 2,500.80 × 571.60
  4. Step 4: Simplify right side
    1,667.12x = 1,429,457.28
  5. Step 5: Solve for x
    x = 1,429,457.28/1,667.12
  6. Step 6: Final answer
    x = 857.44

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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.