Home / 9,406.18-12,980.68-5,157.63

Finding the Fourth Proportional to 9,406.18, 12,980.68 and 5,157.63

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Solution

The fourth proportional to 9,406.18, 12,980.68 and 5,157.63 is: 7,117.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,406.18 : 12,980.68 = 5,157.63 : x
  2. Step 2: Convert to fraction form
    9,406.18/12,980.68 = 5,157.63/x
  3. Step 3: Cross multiply
    9,406.18x = 12,980.68 × 5,157.63
  4. Step 4: Simplify right side
    9,406.18x = 66,949,582.71
  5. Step 5: Solve for x
    x = 66,949,582.71/9,406.18
  6. Step 6: Final answer
    x = 7,117.61

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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.