Home / 5,139.80-7,705.08-1,852.12

Finding the Fourth Proportional to 5,139.80, 7,705.08 and 1,852.12

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Solution

The fourth proportional to 5,139.80, 7,705.08 and 1,852.12 is: 2,776.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,139.80 : 7,705.08 = 1,852.12 : x
  2. Step 2: Convert to fraction form
    5,139.80/7,705.08 = 1,852.12/x
  3. Step 3: Cross multiply
    5,139.80x = 7,705.08 × 1,852.12
  4. Step 4: Simplify right side
    5,139.80x = 14,270,732.77
  5. Step 5: Solve for x
    x = 14,270,732.77/5,139.80
  6. Step 6: Final answer
    x = 2,776.52

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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.