Home / 7,421.40-10,238.34-4,275.72

Finding the Fourth Proportional to 7,421.40, 10,238.34 and 4,275.72

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Solution

The fourth proportional to 7,421.40, 10,238.34 and 4,275.72 is: 5,898.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.40 : 10,238.34 = 4,275.72 : x
  2. Step 2: Convert to fraction form
    7,421.40/10,238.34 = 4,275.72/x
  3. Step 3: Cross multiply
    7,421.40x = 10,238.34 × 4,275.72
  4. Step 4: Simplify right side
    7,421.40x = 43,776,275.10
  5. Step 5: Solve for x
    x = 43,776,275.10/7,421.40
  6. Step 6: Final answer
    x = 5,898.65

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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.