Home / 4,378.40-6,566.64-1,258.40

Finding the Fourth Proportional to 4,378.40, 6,566.64 and 1,258.40

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Solution

The fourth proportional to 4,378.40, 6,566.64 and 1,258.40 is: 1,887.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,378.40 : 6,566.64 = 1,258.40 : x
  2. Step 2: Convert to fraction form
    4,378.40/6,566.64 = 1,258.40/x
  3. Step 3: Cross multiply
    4,378.40x = 6,566.64 × 1,258.40
  4. Step 4: Simplify right side
    4,378.40x = 8,263,459.78
  5. Step 5: Solve for x
    x = 8,263,459.78/4,378.40
  6. Step 6: Final answer
    x = 1,887.32

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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.