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Finding the Fourth Proportional to 8,646.51, 12,955.19 and 5,715.93

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Solution

The fourth proportional to 8,646.51, 12,955.19 and 5,715.93 is: 8,564.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,646.51 : 12,955.19 = 5,715.93 : x
  2. Step 2: Convert to fraction form
    8,646.51/12,955.19 = 5,715.93/x
  3. Step 3: Cross multiply
    8,646.51x = 12,955.19 × 5,715.93
  4. Step 4: Simplify right side
    8,646.51x = 74,050,930.60
  5. Step 5: Solve for x
    x = 74,050,930.60/8,646.51
  6. Step 6: Final answer
    x = 8,564.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.