Home / 2,947.86-4,420.38-1,715.64

Finding the Fourth Proportional to 2,947.86, 4,420.38 and 1,715.64

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Solution

The fourth proportional to 2,947.86, 4,420.38 and 1,715.64 is: 2,572.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947.86 : 4,420.38 = 1,715.64 : x
  2. Step 2: Convert to fraction form
    2,947.86/4,420.38 = 1,715.64/x
  3. Step 3: Cross multiply
    2,947.86x = 4,420.38 × 1,715.64
  4. Step 4: Simplify right side
    2,947.86x = 7,583,780.74
  5. Step 5: Solve for x
    x = 7,583,780.74/2,947.86
  6. Step 6: Final answer
    x = 2,572.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.