Home / 1,313.18-1,810.42-1,125.86

Finding the Fourth Proportional to 1,313.18, 1,810.42 and 1,125.86

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Solution

The fourth proportional to 1,313.18, 1,810.42 and 1,125.86 is: 1,552.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,313.18 : 1,810.42 = 1,125.86 : x
  2. Step 2: Convert to fraction form
    1,313.18/1,810.42 = 1,125.86/x
  3. Step 3: Cross multiply
    1,313.18x = 1,810.42 × 1,125.86
  4. Step 4: Simplify right side
    1,313.18x = 2,038,279.46
  5. Step 5: Solve for x
    x = 2,038,279.46/1,313.18
  6. Step 6: Final answer
    x = 1,552.17

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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.