Home / 5,280.58-7,920.85-1,582.81

Finding the Fourth Proportional to 5,280.58, 7,920.85 and 1,582.81

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Solution

The fourth proportional to 5,280.58, 7,920.85 and 1,582.81 is: 2,374.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280.58 : 7,920.85 = 1,582.81 : x
  2. Step 2: Convert to fraction form
    5,280.58/7,920.85 = 1,582.81/x
  3. Step 3: Cross multiply
    5,280.58x = 7,920.85 × 1,582.81
  4. Step 4: Simplify right side
    5,280.58x = 12,537,200.59
  5. Step 5: Solve for x
    x = 12,537,200.59/5,280.58
  6. Step 6: Final answer
    x = 2,374.21

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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.