Home / 9,291.16-12,821.80-5,312.35

Finding the Fourth Proportional to 9,291.16, 12,821.80 and 5,312.35

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Solution

The fourth proportional to 9,291.16, 12,821.80 and 5,312.35 is: 7,331.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,291.16 : 12,821.80 = 5,312.35 : x
  2. Step 2: Convert to fraction form
    9,291.16/12,821.80 = 5,312.35/x
  3. Step 3: Cross multiply
    9,291.16x = 12,821.80 × 5,312.35
  4. Step 4: Simplify right side
    9,291.16x = 68,113,825.12
  5. Step 5: Solve for x
    x = 68,113,825.12/9,291.16
  6. Step 6: Final answer
    x = 7,331.04

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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.