Home / 6,931.56-10,390.86-2,547.84

Finding the Fourth Proportional to 6,931.56, 10,390.86 and 2,547.84

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Solution

The fourth proportional to 6,931.56, 10,390.86 and 2,547.84 is: 3,819.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,931.56 : 10,390.86 = 2,547.84 : x
  2. Step 2: Convert to fraction form
    6,931.56/10,390.86 = 2,547.84/x
  3. Step 3: Cross multiply
    6,931.56x = 10,390.86 × 2,547.84
  4. Step 4: Simplify right side
    6,931.56x = 26,474,248.74
  5. Step 5: Solve for x
    x = 26,474,248.74/6,931.56
  6. Step 6: Final answer
    x = 3,819.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.