Home / 7,835.52-10,812.72-4,478.16

Finding the Fourth Proportional to 7,835.52, 10,812.72 and 4,478.16

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Solution

The fourth proportional to 7,835.52, 10,812.72 and 4,478.16 is: 6,179.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,835.52 : 10,812.72 = 4,478.16 : x
  2. Step 2: Convert to fraction form
    7,835.52/10,812.72 = 4,478.16/x
  3. Step 3: Cross multiply
    7,835.52x = 10,812.72 × 4,478.16
  4. Step 4: Simplify right side
    7,835.52x = 48,421,090.20
  5. Step 5: Solve for x
    x = 48,421,090.20/7,835.52
  6. Step 6: Final answer
    x = 6,179.69

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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.