Home / 1,782.35-2,459.55-985.64

Finding the Fourth Proportional to 1,782.35, 2,459.55 and 985.64

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Solution

The fourth proportional to 1,782.35, 2,459.55 and 985.64 is: 1,360.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,782.35 : 2,459.55 = 985.64 : x
  2. Step 2: Convert to fraction form
    1,782.35/2,459.55 = 985.64/x
  3. Step 3: Cross multiply
    1,782.35x = 2,459.55 × 985.64
  4. Step 4: Simplify right side
    1,782.35x = 2,424,230.86
  5. Step 5: Solve for x
    x = 2,424,230.86/1,782.35
  6. Step 6: Final answer
    x = 1,360.13

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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.