Home / 8,918.63-12,307.70-5,192.63

Finding the Fourth Proportional to 8,918.63, 12,307.70 and 5,192.63

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Solution

The fourth proportional to 8,918.63, 12,307.70 and 5,192.63 is: 7,165.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,918.63 : 12,307.70 = 5,192.63 : x
  2. Step 2: Convert to fraction form
    8,918.63/12,307.70 = 5,192.63/x
  3. Step 3: Cross multiply
    8,918.63x = 12,307.70 × 5,192.63
  4. Step 4: Simplify right side
    8,918.63x = 63,909,283.69
  5. Step 5: Solve for x
    x = 63,909,283.69/8,918.63
  6. Step 6: Final answer
    x = 7,165.82

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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.