Home / 7,964.64-10,988.40-4,778.96

Finding the Fourth Proportional to 7,964.64, 10,988.40 and 4,778.96

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Solution

The fourth proportional to 7,964.64, 10,988.40 and 4,778.96 is: 6,593.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,964.64 : 10,988.40 = 4,778.96 : x
  2. Step 2: Convert to fraction form
    7,964.64/10,988.40 = 4,778.96/x
  3. Step 3: Cross multiply
    7,964.64x = 10,988.40 × 4,778.96
  4. Step 4: Simplify right side
    7,964.64x = 52,513,124.06
  5. Step 5: Solve for x
    x = 52,513,124.06/7,964.64
  6. Step 6: Final answer
    x = 6,593.28

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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.