Home / 1,313.56-1,815.33-1,077.14

Finding the Fourth Proportional to 1,313.56, 1,815.33 and 1,077.14

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Solution

The fourth proportional to 1,313.56, 1,815.33 and 1,077.14 is: 1,488.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,313.56 : 1,815.33 = 1,077.14 : x
  2. Step 2: Convert to fraction form
    1,313.56/1,815.33 = 1,077.14/x
  3. Step 3: Cross multiply
    1,313.56x = 1,815.33 × 1,077.14
  4. Step 4: Simplify right side
    1,313.56x = 1,955,359.17
  5. Step 5: Solve for x
    x = 1,955,359.17/1,313.56
  6. Step 6: Final answer
    x = 1,488.60

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1.5x scale

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.