Home / 3,030.24-4,178.88-2,803.98

Finding the Fourth Proportional to 3,030.24, 4,178.88 and 2,803.98

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Solution

The fourth proportional to 3,030.24, 4,178.88 and 2,803.98 is: 3,866.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,030.24 : 4,178.88 = 2,803.98 : x
  2. Step 2: Convert to fraction form
    3,030.24/4,178.88 = 2,803.98/x
  3. Step 3: Cross multiply
    3,030.24x = 4,178.88 × 2,803.98
  4. Step 4: Simplify right side
    3,030.24x = 11,717,495.94
  5. Step 5: Solve for x
    x = 11,717,495.94/3,030.24
  6. Step 6: Final answer
    x = 3,866.85

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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.