Home / 7,088.79-10,639.67-5,439.99

Finding the Fourth Proportional to 7,088.79, 10,639.67 and 5,439.99

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Solution

The fourth proportional to 7,088.79, 10,639.67 and 5,439.99 is: 8,164.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,088.79 : 10,639.67 = 5,439.99 : x
  2. Step 2: Convert to fraction form
    7,088.79/10,639.67 = 5,439.99/x
  3. Step 3: Cross multiply
    7,088.79x = 10,639.67 × 5,439.99
  4. Step 4: Simplify right side
    7,088.79x = 57,879,671.20
  5. Step 5: Solve for x
    x = 57,879,671.20/7,088.79
  6. Step 6: Final answer
    x = 8,164.96

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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.