Home / 2,947.84-4,420.35-1,386.53

Finding the Fourth Proportional to 2,947.84, 4,420.35 and 1,386.53

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Solution

The fourth proportional to 2,947.84, 4,420.35 and 1,386.53 is: 2,079.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947.84 : 4,420.35 = 1,386.53 : x
  2. Step 2: Convert to fraction form
    2,947.84/4,420.35 = 1,386.53/x
  3. Step 3: Cross multiply
    2,947.84x = 4,420.35 × 1,386.53
  4. Step 4: Simplify right side
    2,947.84x = 6,128,926.03
  5. Step 5: Solve for x
    x = 6,128,926.03/2,947.84
  6. Step 6: Final answer
    x = 2,079.13

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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.