Home / 9,108.96-12,570.48-5,130.06

Finding the Fourth Proportional to 9,108.96, 12,570.48 and 5,130.06

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Solution

The fourth proportional to 9,108.96, 12,570.48 and 5,130.06 is: 7,079.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,108.96 : 12,570.48 = 5,130.06 : x
  2. Step 2: Convert to fraction form
    9,108.96/12,570.48 = 5,130.06/x
  3. Step 3: Cross multiply
    9,108.96x = 12,570.48 × 5,130.06
  4. Step 4: Simplify right side
    9,108.96x = 64,487,316.63
  5. Step 5: Solve for x
    x = 64,487,316.63/9,108.96
  6. Step 6: Final answer
    x = 7,079.55

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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.