Home / 1,117.25-1,541.90-651.59

Finding the Fourth Proportional to 1,117.25, 1,541.90 and 651.59

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Solution

The fourth proportional to 1,117.25, 1,541.90 and 651.59 is: 899.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,117.25 : 1,541.90 = 651.59 : x
  2. Step 2: Convert to fraction form
    1,117.25/1,541.90 = 651.59/x
  3. Step 3: Cross multiply
    1,117.25x = 1,541.90 × 651.59
  4. Step 4: Simplify right side
    1,117.25x = 1,004,686.62
  5. Step 5: Solve for x
    x = 1,004,686.62/1,117.25
  6. Step 6: Final answer
    x = 899.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.