Home / 9,108.86-12,570.39-5,130.14

Finding the Fourth Proportional to 9,108.86, 12,570.39 and 5,130.14

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Solution

The fourth proportional to 9,108.86, 12,570.39 and 5,130.14 is: 7,079.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,108.86 : 12,570.39 = 5,130.14 : x
  2. Step 2: Convert to fraction form
    9,108.86/12,570.39 = 5,130.14/x
  3. Step 3: Cross multiply
    9,108.86x = 12,570.39 × 5,130.14
  4. Step 4: Simplify right side
    9,108.86x = 64,487,797.70
  5. Step 5: Solve for x
    x = 64,487,797.70/9,108.86
  6. Step 6: Final answer
    x = 7,079.68

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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.