Home / 8,100.04-12,129.40-6,458.98

Finding the Fourth Proportional to 8,100.04, 12,129.40 and 6,458.98

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Solution

The fourth proportional to 8,100.04, 12,129.40 and 6,458.98 is: 9,672.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,100.04 : 12,129.40 = 6,458.98 : x
  2. Step 2: Convert to fraction form
    8,100.04/12,129.40 = 6,458.98/x
  3. Step 3: Cross multiply
    8,100.04x = 12,129.40 × 6,458.98
  4. Step 4: Simplify right side
    8,100.04x = 78,343,552.01
  5. Step 5: Solve for x
    x = 78,343,552.01/8,100.04
  6. Step 6: Final answer
    x = 9,672.00

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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.