Home / 9,403.98-12,977.41-5,155.28

Finding the Fourth Proportional to 9,403.98, 12,977.41 and 5,155.28

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Solution

The fourth proportional to 9,403.98, 12,977.41 and 5,155.28 is: 7,114.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,403.98 : 12,977.41 = 5,155.28 : x
  2. Step 2: Convert to fraction form
    9,403.98/12,977.41 = 5,155.28/x
  3. Step 3: Cross multiply
    9,403.98x = 12,977.41 × 5,155.28
  4. Step 4: Simplify right side
    9,403.98x = 66,902,182.22
  5. Step 5: Solve for x
    x = 66,902,182.22/9,403.98
  6. Step 6: Final answer
    x = 7,114.24

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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.