Home / 7,157.76-9,885.20-4,925.40

Finding the Fourth Proportional to 7,157.76, 9,885.20 and 4,925.40

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Solution

The fourth proportional to 7,157.76, 9,885.20 and 4,925.40 is: 6,802.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,157.76 : 9,885.20 = 4,925.40 : x
  2. Step 2: Convert to fraction form
    7,157.76/9,885.20 = 4,925.40/x
  3. Step 3: Cross multiply
    7,157.76x = 9,885.20 × 4,925.40
  4. Step 4: Simplify right side
    7,157.76x = 48,688,564.08
  5. Step 5: Solve for x
    x = 48,688,564.08/7,157.76
  6. Step 6: Final answer
    x = 6,802.21

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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.