Home / 4,390.40-6,585.76-1,312.64

Finding the Fourth Proportional to 4,390.40, 6,585.76 and 1,312.64

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Solution

The fourth proportional to 4,390.40, 6,585.76 and 1,312.64 is: 1,969.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,390.40 : 6,585.76 = 1,312.64 : x
  2. Step 2: Convert to fraction form
    4,390.40/6,585.76 = 1,312.64/x
  3. Step 3: Cross multiply
    4,390.40x = 6,585.76 × 1,312.64
  4. Step 4: Simplify right side
    4,390.40x = 8,644,732.01
  5. Step 5: Solve for x
    x = 8,644,732.01/4,390.40
  6. Step 6: Final answer
    x = 1,969.01

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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.