Home / 7,070.40-10,605.44-1,876.80

Finding the Fourth Proportional to 7,070.40, 10,605.44 and 1,876.80

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Solution

The fourth proportional to 7,070.40, 10,605.44 and 1,876.80 is: 2,815.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,070.40 : 10,605.44 = 1,876.80 : x
  2. Step 2: Convert to fraction form
    7,070.40/10,605.44 = 1,876.80/x
  3. Step 3: Cross multiply
    7,070.40x = 10,605.44 × 1,876.80
  4. Step 4: Simplify right side
    7,070.40x = 19,904,289.79
  5. Step 5: Solve for x
    x = 19,904,289.79/7,070.40
  6. Step 6: Final answer
    x = 2,815.16

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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.