Home / 9,291.14-12,821.36-5,312.51

Finding the Fourth Proportional to 9,291.14, 12,821.36 and 5,312.51

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Solution

The fourth proportional to 9,291.14, 12,821.36 and 5,312.51 is: 7,331.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,291.14 : 12,821.36 = 5,312.51 : x
  2. Step 2: Convert to fraction form
    9,291.14/12,821.36 = 5,312.51/x
  3. Step 3: Cross multiply
    9,291.14x = 12,821.36 × 5,312.51
  4. Step 4: Simplify right side
    9,291.14x = 68,113,512.54
  5. Step 5: Solve for x
    x = 68,113,512.54/9,291.14
  6. Step 6: Final answer
    x = 7,331.02

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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.