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Finding the Fourth Proportional to 8,368.30, 11,547.75 and 4,642.30

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Solution

The fourth proportional to 8,368.30, 11,547.75 and 4,642.30 is: 6,406.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,368.30 : 11,547.75 = 4,642.30 : x
  2. Step 2: Convert to fraction form
    8,368.30/11,547.75 = 4,642.30/x
  3. Step 3: Cross multiply
    8,368.30x = 11,547.75 × 4,642.30
  4. Step 4: Simplify right side
    8,368.30x = 53,608,119.83
  5. Step 5: Solve for x
    x = 53,608,119.83/8,368.30
  6. Step 6: Final answer
    x = 6,406.09

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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.