Home / 5,124.40-7,686.60-1,661.65

Finding the Fourth Proportional to 5,124.40, 7,686.60 and 1,661.65

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Solution

The fourth proportional to 5,124.40, 7,686.60 and 1,661.65 is: 2,492.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,124.40 : 7,686.60 = 1,661.65 : x
  2. Step 2: Convert to fraction form
    5,124.40/7,686.60 = 1,661.65/x
  3. Step 3: Cross multiply
    5,124.40x = 7,686.60 × 1,661.65
  4. Step 4: Simplify right side
    5,124.40x = 12,772,438.89
  5. Step 5: Solve for x
    x = 12,772,438.89/5,124.40
  6. Step 6: Final answer
    x = 2,492.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.