Home / 1,781.89-2,459.85-1,035.72

Finding the Fourth Proportional to 1,781.89, 2,459.85 and 1,035.72

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Solution

The fourth proportional to 1,781.89, 2,459.85 and 1,035.72 is: 1,429.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,781.89 : 2,459.85 = 1,035.72 : x
  2. Step 2: Convert to fraction form
    1,781.89/2,459.85 = 1,035.72/x
  3. Step 3: Cross multiply
    1,781.89x = 2,459.85 × 1,035.72
  4. Step 4: Simplify right side
    1,781.89x = 2,547,715.84
  5. Step 5: Solve for x
    x = 2,547,715.84/1,781.89
  6. Step 6: Final answer
    x = 1,429.78

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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.