Home / 1,501.74-2,066.85-1,315.71

Finding the Fourth Proportional to 1,501.74, 2,066.85 and 1,315.71

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Solution

The fourth proportional to 1,501.74, 2,066.85 and 1,315.71 is: 1,810.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,501.74 : 2,066.85 = 1,315.71 : x
  2. Step 2: Convert to fraction form
    1,501.74/2,066.85 = 1,315.71/x
  3. Step 3: Cross multiply
    1,501.74x = 2,066.85 × 1,315.71
  4. Step 4: Simplify right side
    1,501.74x = 2,719,375.21
  5. Step 5: Solve for x
    x = 2,719,375.21/1,501.74
  6. Step 6: Final answer
    x = 1,810.82

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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.