Home / 2,988.40-4,477.20-2,437.60

Finding the Fourth Proportional to 2,988.40, 4,477.20 and 2,437.60

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Solution

The fourth proportional to 2,988.40, 4,477.20 and 2,437.60 is: 3,652.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.40 : 4,477.20 = 2,437.60 : x
  2. Step 2: Convert to fraction form
    2,988.40/4,477.20 = 2,437.60/x
  3. Step 3: Cross multiply
    2,988.40x = 4,477.20 × 2,437.60
  4. Step 4: Simplify right side
    2,988.40x = 10,913,622.72
  5. Step 5: Solve for x
    x = 10,913,622.72/2,988.40
  6. Step 6: Final answer
    x = 3,652.00

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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.