Home / 7,120.70-9,826.08-4,287.53

Finding the Fourth Proportional to 7,120.70, 9,826.08 and 4,287.53

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Solution

The fourth proportional to 7,120.70, 9,826.08 and 4,287.53 is: 5,916.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,120.70 : 9,826.08 = 4,287.53 : x
  2. Step 2: Convert to fraction form
    7,120.70/9,826.08 = 4,287.53/x
  3. Step 3: Cross multiply
    7,120.70x = 9,826.08 × 4,287.53
  4. Step 4: Simplify right side
    7,120.70x = 42,129,563.65
  5. Step 5: Solve for x
    x = 42,129,563.65/7,120.70
  6. Step 6: Final answer
    x = 5,916.50

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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.