Home / 8,948.63-12,349.67-5,172.47

Finding the Fourth Proportional to 8,948.63, 12,349.67 and 5,172.47

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Solution

The fourth proportional to 8,948.63, 12,349.67 and 5,172.47 is: 7,138.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,948.63 : 12,349.67 = 5,172.47 : x
  2. Step 2: Convert to fraction form
    8,948.63/12,349.67 = 5,172.47/x
  3. Step 3: Cross multiply
    8,948.63x = 12,349.67 × 5,172.47
  4. Step 4: Simplify right side
    8,948.63x = 63,878,325.75
  5. Step 5: Solve for x
    x = 63,878,325.75/8,948.63
  6. Step 6: Final answer
    x = 7,138.34

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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.