Home / 3,315.51-4,970.15-1,122.71

Finding the Fourth Proportional to 3,315.51, 4,970.15 and 1,122.71

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Solution

The fourth proportional to 3,315.51, 4,970.15 and 1,122.71 is: 1,683.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315.51 : 4,970.15 = 1,122.71 : x
  2. Step 2: Convert to fraction form
    3,315.51/4,970.15 = 1,122.71/x
  3. Step 3: Cross multiply
    3,315.51x = 4,970.15 × 1,122.71
  4. Step 4: Simplify right side
    3,315.51x = 5,580,006.64
  5. Step 5: Solve for x
    x = 5,580,006.64/3,315.51
  6. Step 6: Final answer
    x = 1,683.00

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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.