Home / 9,153.18-12,631.08-5,120.28

Finding the Fourth Proportional to 9,153.18, 12,631.08 and 5,120.28

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Solution

The fourth proportional to 9,153.18, 12,631.08 and 5,120.28 is: 7,065.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,153.18 : 12,631.08 = 5,120.28 : x
  2. Step 2: Convert to fraction form
    9,153.18/12,631.08 = 5,120.28/x
  3. Step 3: Cross multiply
    9,153.18x = 12,631.08 × 5,120.28
  4. Step 4: Simplify right side
    9,153.18x = 64,674,666.30
  5. Step 5: Solve for x
    x = 64,674,666.30/9,153.18
  6. Step 6: Final answer
    x = 7,065.81

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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.