Home / 1,863.19-2,570.70-1,199.80

Finding the Fourth Proportional to 1,863.19, 2,570.70 and 1,199.80

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Solution

The fourth proportional to 1,863.19, 2,570.70 and 1,199.80 is: 1,655.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,863.19 : 2,570.70 = 1,199.80 : x
  2. Step 2: Convert to fraction form
    1,863.19/2,570.70 = 1,199.80/x
  3. Step 3: Cross multiply
    1,863.19x = 2,570.70 × 1,199.80
  4. Step 4: Simplify right side
    1,863.19x = 3,084,325.86
  5. Step 5: Solve for x
    x = 3,084,325.86/1,863.19
  6. Step 6: Final answer
    x = 1,655.40

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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.