Home / 7,921.32-10,931.40-4,384.32

Finding the Fourth Proportional to 7,921.32, 10,931.40 and 4,384.32

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Solution

The fourth proportional to 7,921.32, 10,931.40 and 4,384.32 is: 6,050.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,921.32 : 10,931.40 = 4,384.32 : x
  2. Step 2: Convert to fraction form
    7,921.32/10,931.40 = 4,384.32/x
  3. Step 3: Cross multiply
    7,921.32x = 10,931.40 × 4,384.32
  4. Step 4: Simplify right side
    7,921.32x = 47,926,755.65
  5. Step 5: Solve for x
    x = 47,926,755.65/7,921.32
  6. Step 6: Final answer
    x = 6,050.35

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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.