Home / 1,926.30-2,885.40-1,561.80

Finding the Fourth Proportional to 1,926.30, 2,885.40 and 1,561.80

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Solution

The fourth proportional to 1,926.30, 2,885.40 and 1,561.80 is: 2,339.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,926.30 : 2,885.40 = 1,561.80 : x
  2. Step 2: Convert to fraction form
    1,926.30/2,885.40 = 1,561.80/x
  3. Step 3: Cross multiply
    1,926.30x = 2,885.40 × 1,561.80
  4. Step 4: Simplify right side
    1,926.30x = 4,506,417.72
  5. Step 5: Solve for x
    x = 4,506,417.72/1,926.30
  6. Step 6: Final answer
    x = 2,339.42

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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.