Home / 1,317.16-1,975.70-537.15

Finding the Fourth Proportional to 1,317.16, 1,975.70 and 537.15

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Solution

The fourth proportional to 1,317.16, 1,975.70 and 537.15 is: 805.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317.16 : 1,975.70 = 537.15 : x
  2. Step 2: Convert to fraction form
    1,317.16/1,975.70 = 537.15/x
  3. Step 3: Cross multiply
    1,317.16x = 1,975.70 × 537.15
  4. Step 4: Simplify right side
    1,317.16x = 1,061,252.99
  5. Step 5: Solve for x
    x = 1,061,252.99/1,317.16
  6. Step 6: Final answer
    x = 805.72

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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.