Home / 4,681.40-7,022.28-1,218.56

Finding the Fourth Proportional to 4,681.40, 7,022.28 and 1,218.56

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Solution

The fourth proportional to 4,681.40, 7,022.28 and 1,218.56 is: 1,827.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,681.40 : 7,022.28 = 1,218.56 : x
  2. Step 2: Convert to fraction form
    4,681.40/7,022.28 = 1,218.56/x
  3. Step 3: Cross multiply
    4,681.40x = 7,022.28 × 1,218.56
  4. Step 4: Simplify right side
    4,681.40x = 8,557,069.52
  5. Step 5: Solve for x
    x = 8,557,069.52/4,681.40
  6. Step 6: Final answer
    x = 1,827.89

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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.