Home / 7,189.40-9,916.98-4,390.04

Finding the Fourth Proportional to 7,189.40, 9,916.98 and 4,390.04

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Solution

The fourth proportional to 7,189.40, 9,916.98 and 4,390.04 is: 6,055.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,189.40 : 9,916.98 = 4,390.04 : x
  2. Step 2: Convert to fraction form
    7,189.40/9,916.98 = 4,390.04/x
  3. Step 3: Cross multiply
    7,189.40x = 9,916.98 × 4,390.04
  4. Step 4: Simplify right side
    7,189.40x = 43,535,938.88
  5. Step 5: Solve for x
    x = 43,535,938.88/7,189.40
  6. Step 6: Final answer
    x = 6,055.57

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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.