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Finding the Fourth Proportional to 8,605.61, 11,875.55 and 4,828.71

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Solution

The fourth proportional to 8,605.61, 11,875.55 and 4,828.71 is: 6,663.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,605.61 : 11,875.55 = 4,828.71 : x
  2. Step 2: Convert to fraction form
    8,605.61/11,875.55 = 4,828.71/x
  3. Step 3: Cross multiply
    8,605.61x = 11,875.55 × 4,828.71
  4. Step 4: Simplify right side
    8,605.61x = 57,343,587.04
  5. Step 5: Solve for x
    x = 57,343,587.04/8,605.61
  6. Step 6: Final answer
    x = 6,663.51

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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.