Home / 7,818.32-11,711.16-4,688.40

Finding the Fourth Proportional to 7,818.32, 11,711.16 and 4,688.40

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Solution

The fourth proportional to 7,818.32, 11,711.16 and 4,688.40 is: 7,022.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,818.32 : 11,711.16 = 4,688.40 : x
  2. Step 2: Convert to fraction form
    7,818.32/11,711.16 = 4,688.40/x
  3. Step 3: Cross multiply
    7,818.32x = 11,711.16 × 4,688.40
  4. Step 4: Simplify right side
    7,818.32x = 54,906,602.54
  5. Step 5: Solve for x
    x = 54,906,602.54/7,818.32
  6. Step 6: Final answer
    x = 7,022.81

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1.5x scale

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.