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Finding the Fourth Proportional to 1,870.03, 2,580.02 and 1,207.32

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Solution

The fourth proportional to 1,870.03, 2,580.02 and 1,207.32 is: 1,665.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,870.03 : 2,580.02 = 1,207.32 : x
  2. Step 2: Convert to fraction form
    1,870.03/2,580.02 = 1,207.32/x
  3. Step 3: Cross multiply
    1,870.03x = 2,580.02 × 1,207.32
  4. Step 4: Simplify right side
    1,870.03x = 3,114,903.71
  5. Step 5: Solve for x
    x = 3,114,903.71/1,870.03
  6. Step 6: Final answer
    x = 1,665.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.