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Finding the Fourth Proportional to 8,362.40, 11,547.91 and 5,383.40

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Solution

The fourth proportional to 8,362.40, 11,547.91 and 5,383.40 is: 7,434.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,362.40 : 11,547.91 = 5,383.40 : x
  2. Step 2: Convert to fraction form
    8,362.40/11,547.91 = 5,383.40/x
  3. Step 3: Cross multiply
    8,362.40x = 11,547.91 × 5,383.40
  4. Step 4: Simplify right side
    8,362.40x = 62,167,018.69
  5. Step 5: Solve for x
    x = 62,167,018.69/8,362.40
  6. Step 6: Final answer
    x = 7,434.11

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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.