Home / 9,120.18-12,585.08-5,342.84

Finding the Fourth Proportional to 9,120.18, 12,585.08 and 5,342.84

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Solution

The fourth proportional to 9,120.18, 12,585.08 and 5,342.84 is: 7,372.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,120.18 : 12,585.08 = 5,342.84 : x
  2. Step 2: Convert to fraction form
    9,120.18/12,585.08 = 5,342.84/x
  3. Step 3: Cross multiply
    9,120.18x = 12,585.08 × 5,342.84
  4. Step 4: Simplify right side
    9,120.18x = 67,240,068.83
  5. Step 5: Solve for x
    x = 67,240,068.83/9,120.18
  6. Step 6: Final answer
    x = 7,372.67

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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.