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Finding the Fourth Proportional to 9,000.65, 12,420.52 and 5,223.52

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Solution

The fourth proportional to 9,000.65, 12,420.52 and 5,223.52 is: 7,208.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,000.65 : 12,420.52 = 5,223.52 : x
  2. Step 2: Convert to fraction form
    9,000.65/12,420.52 = 5,223.52/x
  3. Step 3: Cross multiply
    9,000.65x = 12,420.52 × 5,223.52
  4. Step 4: Simplify right side
    9,000.65x = 64,878,808.51
  5. Step 5: Solve for x
    x = 64,878,808.51/9,000.65
  6. Step 6: Final answer
    x = 7,208.24

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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.