Home / 1,528.18-2,291.32-661.76

Finding the Fourth Proportional to 1,528.18, 2,291.32 and 661.76

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Solution

The fourth proportional to 1,528.18, 2,291.32 and 661.76 is: 992.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,528.18 : 2,291.32 = 661.76 : x
  2. Step 2: Convert to fraction form
    1,528.18/2,291.32 = 661.76/x
  3. Step 3: Cross multiply
    1,528.18x = 2,291.32 × 661.76
  4. Step 4: Simplify right side
    1,528.18x = 1,516,303.92
  5. Step 5: Solve for x
    x = 1,516,303.92/1,528.18
  6. Step 6: Final answer
    x = 992.23

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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.