Home / 9,117.10-12,581.70-5,339.44

Finding the Fourth Proportional to 9,117.10, 12,581.70 and 5,339.44

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Solution

The fourth proportional to 9,117.10, 12,581.70 and 5,339.44 is: 7,368.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,117.10 : 12,581.70 = 5,339.44 : x
  2. Step 2: Convert to fraction form
    9,117.10/12,581.70 = 5,339.44/x
  3. Step 3: Cross multiply
    9,117.10x = 12,581.70 × 5,339.44
  4. Step 4: Simplify right side
    9,117.10x = 67,179,232.25
  5. Step 5: Solve for x
    x = 67,179,232.25/9,117.10
  6. Step 6: Final answer
    x = 7,368.49

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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.