Home / 5,275.63-7,280.50-3,179.89

Finding the Fourth Proportional to 5,275.63, 7,280.50 and 3,179.89

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Solution

The fourth proportional to 5,275.63, 7,280.50 and 3,179.89 is: 4,388.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,275.63 : 7,280.50 = 3,179.89 : x
  2. Step 2: Convert to fraction form
    5,275.63/7,280.50 = 3,179.89/x
  3. Step 3: Cross multiply
    5,275.63x = 7,280.50 × 3,179.89
  4. Step 4: Simplify right side
    5,275.63x = 23,151,152.74
  5. Step 5: Solve for x
    x = 23,151,152.74/5,275.63
  6. Step 6: Final answer
    x = 4,388.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.