Home / 9,145.29-12,621.53-5,166.66

Finding the Fourth Proportional to 9,145.29, 12,621.53 and 5,166.66

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Solution

The fourth proportional to 9,145.29, 12,621.53 and 5,166.66 is: 7,130.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,145.29 : 12,621.53 = 5,166.66 : x
  2. Step 2: Convert to fraction form
    9,145.29/12,621.53 = 5,166.66/x
  3. Step 3: Cross multiply
    9,145.29x = 12,621.53 × 5,166.66
  4. Step 4: Simplify right side
    9,145.29x = 65,211,154.19
  5. Step 5: Solve for x
    x = 65,211,154.19/9,145.29
  6. Step 6: Final answer
    x = 7,130.57

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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.