Home / 1,812.38-2,501.69-1,289.93

Finding the Fourth Proportional to 1,812.38, 2,501.69 and 1,289.93

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Solution

The fourth proportional to 1,812.38, 2,501.69 and 1,289.93 is: 1,780.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,812.38 : 2,501.69 = 1,289.93 : x
  2. Step 2: Convert to fraction form
    1,812.38/2,501.69 = 1,289.93/x
  3. Step 3: Cross multiply
    1,812.38x = 2,501.69 × 1,289.93
  4. Step 4: Simplify right side
    1,812.38x = 3,226,986.02
  5. Step 5: Solve for x
    x = 3,226,986.02/1,812.38
  6. Step 6: Final answer
    x = 1,780.53

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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.