Home / 1,218.61-1,827.98-525.58

Finding the Fourth Proportional to 1,218.61, 1,827.98 and 525.58

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Solution

The fourth proportional to 1,218.61, 1,827.98 and 525.58 is: 788.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218.61 : 1,827.98 = 525.58 : x
  2. Step 2: Convert to fraction form
    1,218.61/1,827.98 = 525.58/x
  3. Step 3: Cross multiply
    1,218.61x = 1,827.98 × 525.58
  4. Step 4: Simplify right side
    1,218.61x = 960,747.10
  5. Step 5: Solve for x
    x = 960,747.10/1,218.61
  6. Step 6: Final answer
    x = 788.40

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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.