Home / 7,088.81-10,638.68-2,930.81

Finding the Fourth Proportional to 7,088.81, 10,638.68 and 2,930.81

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Solution

The fourth proportional to 7,088.81, 10,638.68 and 2,930.81 is: 4,398.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,088.81 : 10,638.68 = 2,930.81 : x
  2. Step 2: Convert to fraction form
    7,088.81/10,638.68 = 2,930.81/x
  3. Step 3: Cross multiply
    7,088.81x = 10,638.68 × 2,930.81
  4. Step 4: Simplify right side
    7,088.81x = 31,179,881.88
  5. Step 5: Solve for x
    x = 31,179,881.88/7,088.81
  6. Step 6: Final answer
    x = 4,398.47

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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.