Home / 2,005.56-2,766.30-1,307.88

Finding the Fourth Proportional to 2,005.56, 2,766.30 and 1,307.88

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Solution

The fourth proportional to 2,005.56, 2,766.30 and 1,307.88 is: 1,803.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,005.56 : 2,766.30 = 1,307.88 : x
  2. Step 2: Convert to fraction form
    2,005.56/2,766.30 = 1,307.88/x
  3. Step 3: Cross multiply
    2,005.56x = 2,766.30 × 1,307.88
  4. Step 4: Simplify right side
    2,005.56x = 3,617,988.44
  5. Step 5: Solve for x
    x = 3,617,988.44/2,005.56
  6. Step 6: Final answer
    x = 1,803.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.