Home / 1,875.07-2,812.60-488.40

Finding the Fourth Proportional to 1,875.07, 2,812.60 and 488.40

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Solution

The fourth proportional to 1,875.07, 2,812.60 and 488.40 is: 732.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,875.07 : 2,812.60 = 488.40 : x
  2. Step 2: Convert to fraction form
    1,875.07/2,812.60 = 488.40/x
  3. Step 3: Cross multiply
    1,875.07x = 2,812.60 × 488.40
  4. Step 4: Simplify right side
    1,875.07x = 1,373,675.06
  5. Step 5: Solve for x
    x = 1,373,675.06/1,875.07
  6. Step 6: Final answer
    x = 732.60

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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.