Home / 3,215.84-4,437.69-1,818.50

Finding the Fourth Proportional to 3,215.84, 4,437.69 and 1,818.50

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Solution

The fourth proportional to 3,215.84, 4,437.69 and 1,818.50 is: 2,509.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.84 : 4,437.69 = 1,818.50 : x
  2. Step 2: Convert to fraction form
    3,215.84/4,437.69 = 1,818.50/x
  3. Step 3: Cross multiply
    3,215.84x = 4,437.69 × 1,818.50
  4. Step 4: Simplify right side
    3,215.84x = 8,069,939.27
  5. Step 5: Solve for x
    x = 8,069,939.27/3,215.84
  6. Step 6: Final answer
    x = 2,509.43

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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.