Home / 2,925.60-4,386.90-1,281.24

Finding the Fourth Proportional to 2,925.60, 4,386.90 and 1,281.24

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Solution

The fourth proportional to 2,925.60, 4,386.90 and 1,281.24 is: 1,921.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,925.60 : 4,386.90 = 1,281.24 : x
  2. Step 2: Convert to fraction form
    2,925.60/4,386.90 = 1,281.24/x
  3. Step 3: Cross multiply
    2,925.60x = 4,386.90 × 1,281.24
  4. Step 4: Simplify right side
    2,925.60x = 5,620,671.76
  5. Step 5: Solve for x
    x = 5,620,671.76/2,925.60
  6. Step 6: Final answer
    x = 1,921.20

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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.