Home / 3,291.40-4,542.56-1,875.60

Finding the Fourth Proportional to 3,291.40, 4,542.56 and 1,875.60

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Solution

The fourth proportional to 3,291.40, 4,542.56 and 1,875.60 is: 2,588.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,291.40 : 4,542.56 = 1,875.60 : x
  2. Step 2: Convert to fraction form
    3,291.40/4,542.56 = 1,875.60/x
  3. Step 3: Cross multiply
    3,291.40x = 4,542.56 × 1,875.60
  4. Step 4: Simplify right side
    3,291.40x = 8,519,999.12
  5. Step 5: Solve for x
    x = 8,519,999.12/3,291.40
  6. Step 6: Final answer
    x = 2,588.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.