Home / 7,112.15-9,815.64-4,281.00

Finding the Fourth Proportional to 7,112.15, 9,815.64 and 4,281.00

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Solution

The fourth proportional to 7,112.15, 9,815.64 and 4,281.00 is: 5,908.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,112.15 : 9,815.64 = 4,281.00 : x
  2. Step 2: Convert to fraction form
    7,112.15/9,815.64 = 4,281.00/x
  3. Step 3: Cross multiply
    7,112.15x = 9,815.64 × 4,281.00
  4. Step 4: Simplify right side
    7,112.15x = 42,020,701.98
  5. Step 5: Solve for x
    x = 42,020,701.98/7,112.15
  6. Step 6: Final answer
    x = 5,908.30

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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.