Home / 9,108.94-12,570.57-5,130.21

Finding the Fourth Proportional to 9,108.94, 12,570.57 and 5,130.21

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Solution

The fourth proportional to 9,108.94, 12,570.57 and 5,130.21 is: 7,079.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,108.94 : 12,570.57 = 5,130.21 : x
  2. Step 2: Convert to fraction form
    9,108.94/12,570.57 = 5,130.21/x
  3. Step 3: Cross multiply
    9,108.94x = 12,570.57 × 5,130.21
  4. Step 4: Simplify right side
    9,108.94x = 64,489,663.92
  5. Step 5: Solve for x
    x = 64,489,663.92/9,108.94
  6. Step 6: Final answer
    x = 7,079.82

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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.