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Finding the Fourth Proportional to 6,917.79, 9,547.88 and 6,495.78

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Solution

The fourth proportional to 6,917.79, 9,547.88 and 6,495.78 is: 8,965.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,917.79 : 9,547.88 = 6,495.78 : x
  2. Step 2: Convert to fraction form
    6,917.79/9,547.88 = 6,495.78/x
  3. Step 3: Cross multiply
    6,917.79x = 9,547.88 × 6,495.78
  4. Step 4: Simplify right side
    6,917.79x = 62,020,895.47
  5. Step 5: Solve for x
    x = 62,020,895.47/6,917.79
  6. Step 6: Final answer
    x = 8,965.42

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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.