Home / 3,123.09-4,686.02-1,479.20

Finding the Fourth Proportional to 3,123.09, 4,686.02 and 1,479.20

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Solution

The fourth proportional to 3,123.09, 4,686.02 and 1,479.20 is: 2,219.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.09 : 4,686.02 = 1,479.20 : x
  2. Step 2: Convert to fraction form
    3,123.09/4,686.02 = 1,479.20/x
  3. Step 3: Cross multiply
    3,123.09x = 4,686.02 × 1,479.20
  4. Step 4: Simplify right side
    3,123.09x = 6,931,529.96
  5. Step 5: Solve for x
    x = 6,931,529.96/3,123.09
  6. Step 6: Final answer
    x = 2,219.45

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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.