Home / 4,287.52-6,431.80-1,209.52

Finding the Fourth Proportional to 4,287.52, 6,431.80 and 1,209.52

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Solution

The fourth proportional to 4,287.52, 6,431.80 and 1,209.52 is: 1,814.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,287.52 : 6,431.80 = 1,209.52 : x
  2. Step 2: Convert to fraction form
    4,287.52/6,431.80 = 1,209.52/x
  3. Step 3: Cross multiply
    4,287.52x = 6,431.80 × 1,209.52
  4. Step 4: Simplify right side
    4,287.52x = 7,779,390.74
  5. Step 5: Solve for x
    x = 7,779,390.74/4,287.52
  6. Step 6: Final answer
    x = 1,814.43

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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.