Home / 1,781.51-2,457.78-1,035.33

Finding the Fourth Proportional to 1,781.51, 2,457.78 and 1,035.33

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Solution

The fourth proportional to 1,781.51, 2,457.78 and 1,035.33 is: 1,428.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,781.51 : 2,457.78 = 1,035.33 : x
  2. Step 2: Convert to fraction form
    1,781.51/2,457.78 = 1,035.33/x
  3. Step 3: Cross multiply
    1,781.51x = 2,457.78 × 1,035.33
  4. Step 4: Simplify right side
    1,781.51x = 2,544,613.37
  5. Step 5: Solve for x
    x = 2,544,613.37/1,781.51
  6. Step 6: Final answer
    x = 1,428.35

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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.