Home / 7,856.47-10,840.15-4,672.11

Finding the Fourth Proportional to 7,856.47, 10,840.15 and 4,672.11

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Solution

The fourth proportional to 7,856.47, 10,840.15 and 4,672.11 is: 6,446.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,856.47 : 10,840.15 = 4,672.11 : x
  2. Step 2: Convert to fraction form
    7,856.47/10,840.15 = 4,672.11/x
  3. Step 3: Cross multiply
    7,856.47x = 10,840.15 × 4,672.11
  4. Step 4: Simplify right side
    7,856.47x = 50,646,341.38
  5. Step 5: Solve for x
    x = 50,646,341.38/7,856.47
  6. Step 6: Final answer
    x = 6,446.45

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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.