Home / 9,145.02-12,619.40-5,166.48

Finding the Fourth Proportional to 9,145.02, 12,619.40 and 5,166.48

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Solution

The fourth proportional to 9,145.02, 12,619.40 and 5,166.48 is: 7,129.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,145.02 : 12,619.40 = 5,166.48 : x
  2. Step 2: Convert to fraction form
    9,145.02/12,619.40 = 5,166.48/x
  3. Step 3: Cross multiply
    9,145.02x = 12,619.40 × 5,166.48
  4. Step 4: Simplify right side
    9,145.02x = 65,197,877.71
  5. Step 5: Solve for x
    x = 65,197,877.71/9,145.02
  6. Step 6: Final answer
    x = 7,129.33

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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.