Home / 10,307.08-15,455.76-3,980.98

Finding the Fourth Proportional to 10,307.08, 15,455.76 and 3,980.98

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Solution

The fourth proportional to 10,307.08, 15,455.76 and 3,980.98 is: 5,969.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,307.08 : 15,455.76 = 3,980.98 : x
  2. Step 2: Convert to fraction form
    10,307.08/15,455.76 = 3,980.98/x
  3. Step 3: Cross multiply
    10,307.08x = 15,455.76 × 3,980.98
  4. Step 4: Simplify right side
    10,307.08x = 61,529,071.44
  5. Step 5: Solve for x
    x = 61,529,071.44/10,307.08
  6. Step 6: Final answer
    x = 5,969.59

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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.