Home / 2,947.89-4,421.84-1,386.93

Finding the Fourth Proportional to 2,947.89, 4,421.84 and 1,386.93

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Solution

The fourth proportional to 2,947.89, 4,421.84 and 1,386.93 is: 2,080.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947.89 : 4,421.84 = 1,386.93 : x
  2. Step 2: Convert to fraction form
    2,947.89/4,421.84 = 1,386.93/x
  3. Step 3: Cross multiply
    2,947.89x = 4,421.84 × 1,386.93
  4. Step 4: Simplify right side
    2,947.89x = 6,132,775.62
  5. Step 5: Solve for x
    x = 6,132,775.62/2,947.89
  6. Step 6: Final answer
    x = 2,080.40

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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.