Home / 3,125.58-4,315.47-1,947.18

Finding the Fourth Proportional to 3,125.58, 4,315.47 and 1,947.18

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Solution

The fourth proportional to 3,125.58, 4,315.47 and 1,947.18 is: 2,688.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.58 : 4,315.47 = 1,947.18 : x
  2. Step 2: Convert to fraction form
    3,125.58/4,315.47 = 1,947.18/x
  3. Step 3: Cross multiply
    3,125.58x = 4,315.47 × 1,947.18
  4. Step 4: Simplify right side
    3,125.58x = 8,402,996.87
  5. Step 5: Solve for x
    x = 8,402,996.87/3,125.58
  6. Step 6: Final answer
    x = 2,688.46

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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.