Home / 1,870.93-2,579.19-1,309.66

Finding the Fourth Proportional to 1,870.93, 2,579.19 and 1,309.66

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Solution

The fourth proportional to 1,870.93, 2,579.19 and 1,309.66 is: 1,805.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,870.93 : 2,579.19 = 1,309.66 : x
  2. Step 2: Convert to fraction form
    1,870.93/2,579.19 = 1,309.66/x
  3. Step 3: Cross multiply
    1,870.93x = 2,579.19 × 1,309.66
  4. Step 4: Simplify right side
    1,870.93x = 3,377,861.98
  5. Step 5: Solve for x
    x = 3,377,861.98/1,870.93
  6. Step 6: Final answer
    x = 1,805.45

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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.