Home / 7,157.21-9,875.25-4,638.51

Finding the Fourth Proportional to 7,157.21, 9,875.25 and 4,638.51

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Solution

The fourth proportional to 7,157.21, 9,875.25 and 4,638.51 is: 6,400.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,157.21 : 9,875.25 = 4,638.51 : x
  2. Step 2: Convert to fraction form
    7,157.21/9,875.25 = 4,638.51/x
  3. Step 3: Cross multiply
    7,157.21x = 9,875.25 × 4,638.51
  4. Step 4: Simplify right side
    7,157.21x = 45,806,445.88
  5. Step 5: Solve for x
    x = 45,806,445.88/7,157.21
  6. Step 6: Final answer
    x = 6,400.05

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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.