Home / 8,971.79-13,457.69-4,290.70

Finding the Fourth Proportional to 8,971.79, 13,457.69 and 4,290.70

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Solution

The fourth proportional to 8,971.79, 13,457.69 and 4,290.70 is: 6,436.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,971.79 : 13,457.69 = 4,290.70 : x
  2. Step 2: Convert to fraction form
    8,971.79/13,457.69 = 4,290.70/x
  3. Step 3: Cross multiply
    8,971.79x = 13,457.69 × 4,290.70
  4. Step 4: Simplify right side
    8,971.79x = 57,742,910.48
  5. Step 5: Solve for x
    x = 57,742,910.48/8,971.79
  6. Step 6: Final answer
    x = 6,436.05

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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.