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Finding the Fourth Proportional to 9,291.51, 12,822.50 and 5,312.99

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Solution

The fourth proportional to 9,291.51, 12,822.50 and 5,312.99 is: 7,332.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,291.51 : 12,822.50 = 5,312.99 : x
  2. Step 2: Convert to fraction form
    9,291.51/12,822.50 = 5,312.99/x
  3. Step 3: Cross multiply
    9,291.51x = 12,822.50 × 5,312.99
  4. Step 4: Simplify right side
    9,291.51x = 68,125,859.61
  5. Step 5: Solve for x
    x = 68,125,859.61/9,291.51
  6. Step 6: Final answer
    x = 7,332.05

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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.