Home / 3,215.63-4,437.95-1,889.45

Finding the Fourth Proportional to 3,215.63, 4,437.95 and 1,889.45

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Solution

The fourth proportional to 3,215.63, 4,437.95 and 1,889.45 is: 2,607.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.63 : 4,437.95 = 1,889.45 : x
  2. Step 2: Convert to fraction form
    3,215.63/4,437.95 = 1,889.45/x
  3. Step 3: Cross multiply
    3,215.63x = 4,437.95 × 1,889.45
  4. Step 4: Simplify right side
    3,215.63x = 8,385,284.63
  5. Step 5: Solve for x
    x = 8,385,284.63/3,215.63
  6. Step 6: Final answer
    x = 2,607.66

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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.