Home / 1,214.28-1,818.77-1,075.88

Finding the Fourth Proportional to 1,214.28, 1,818.77 and 1,075.88

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Solution

The fourth proportional to 1,214.28, 1,818.77 and 1,075.88 is: 1,611.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214.28 : 1,818.77 = 1,075.88 : x
  2. Step 2: Convert to fraction form
    1,214.28/1,818.77 = 1,075.88/x
  3. Step 3: Cross multiply
    1,214.28x = 1,818.77 × 1,075.88
  4. Step 4: Simplify right side
    1,214.28x = 1,956,763.79
  5. Step 5: Solve for x
    x = 1,956,763.79/1,214.28
  6. Step 6: Final answer
    x = 1,611.46

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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.