Home / 5,288.05-7,931.45-1,392.76

Finding the Fourth Proportional to 5,288.05, 7,931.45 and 1,392.76

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Solution

The fourth proportional to 5,288.05, 7,931.45 and 1,392.76 is: 2,088.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,288.05 : 7,931.45 = 1,392.76 : x
  2. Step 2: Convert to fraction form
    5,288.05/7,931.45 = 1,392.76/x
  3. Step 3: Cross multiply
    5,288.05x = 7,931.45 × 1,392.76
  4. Step 4: Simplify right side
    5,288.05x = 11,046,606.30
  5. Step 5: Solve for x
    x = 11,046,606.30/5,288.05
  6. Step 6: Final answer
    x = 2,088.98

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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.