Home / 7,187.40-9,918.50-4,043.57

Finding the Fourth Proportional to 7,187.40, 9,918.50 and 4,043.57

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Solution

The fourth proportional to 7,187.40, 9,918.50 and 4,043.57 is: 5,580.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,187.40 : 9,918.50 = 4,043.57 : x
  2. Step 2: Convert to fraction form
    7,187.40/9,918.50 = 4,043.57/x
  3. Step 3: Cross multiply
    7,187.40x = 9,918.50 × 4,043.57
  4. Step 4: Simplify right side
    7,187.40x = 40,106,079.23
  5. Step 5: Solve for x
    x = 40,106,079.23/7,187.40
  6. Step 6: Final answer
    x = 5,580.05

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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.