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Finding the Fourth Proportional to 7,123.04, 9,820.80 and 4,600.88

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Solution

The fourth proportional to 7,123.04, 9,820.80 and 4,600.88 is: 6,343.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,123.04 : 9,820.80 = 4,600.88 : x
  2. Step 2: Convert to fraction form
    7,123.04/9,820.80 = 4,600.88/x
  3. Step 3: Cross multiply
    7,123.04x = 9,820.80 × 4,600.88
  4. Step 4: Simplify right side
    7,123.04x = 45,184,322.30
  5. Step 5: Solve for x
    x = 45,184,322.30/7,123.04
  6. Step 6: Final answer
    x = 6,343.40

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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.