Home / 7,521.20-10,377.88-4,378.40

Finding the Fourth Proportional to 7,521.20, 10,377.88 and 4,378.40

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Solution

The fourth proportional to 7,521.20, 10,377.88 and 4,378.40 is: 6,041.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,521.20 : 10,377.88 = 4,378.40 : x
  2. Step 2: Convert to fraction form
    7,521.20/10,377.88 = 4,378.40/x
  3. Step 3: Cross multiply
    7,521.20x = 10,377.88 × 4,378.40
  4. Step 4: Simplify right side
    7,521.20x = 45,438,509.79
  5. Step 5: Solve for x
    x = 45,438,509.79/7,521.20
  6. Step 6: Final answer
    x = 6,041.39

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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.