Home / 1,782.81-2,459.70-1,119.63

Finding the Fourth Proportional to 1,782.81, 2,459.70 and 1,119.63

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Solution

The fourth proportional to 1,782.81, 2,459.70 and 1,119.63 is: 1,544.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,782.81 : 2,459.70 = 1,119.63 : x
  2. Step 2: Convert to fraction form
    1,782.81/2,459.70 = 1,119.63/x
  3. Step 3: Cross multiply
    1,782.81x = 2,459.70 × 1,119.63
  4. Step 4: Simplify right side
    1,782.81x = 2,753,953.91
  5. Step 5: Solve for x
    x = 2,753,953.91/1,782.81
  6. Step 6: Final answer
    x = 1,544.73

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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.