Home / 1,779.47-2,453.27-1,247.63

Finding the Fourth Proportional to 1,779.47, 2,453.27 and 1,247.63

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Solution

The fourth proportional to 1,779.47, 2,453.27 and 1,247.63 is: 1,720.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,779.47 : 2,453.27 = 1,247.63 : x
  2. Step 2: Convert to fraction form
    1,779.47/2,453.27 = 1,247.63/x
  3. Step 3: Cross multiply
    1,779.47x = 2,453.27 × 1,247.63
  4. Step 4: Simplify right side
    1,779.47x = 3,060,773.15
  5. Step 5: Solve for x
    x = 3,060,773.15/1,779.47
  6. Step 6: Final answer
    x = 1,720.05

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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.