Home / 7,840.28-10,819.54-4,255.16

Finding the Fourth Proportional to 7,840.28, 10,819.54 and 4,255.16

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Solution

The fourth proportional to 7,840.28, 10,819.54 and 4,255.16 is: 5,872.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,840.28 : 10,819.54 = 4,255.16 : x
  2. Step 2: Convert to fraction form
    7,840.28/10,819.54 = 4,255.16/x
  3. Step 3: Cross multiply
    7,840.28x = 10,819.54 × 4,255.16
  4. Step 4: Simplify right side
    7,840.28x = 46,038,873.83
  5. Step 5: Solve for x
    x = 46,038,873.83/7,840.28
  6. Step 6: Final answer
    x = 5,872.10

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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.