Home / 4,875.12-7,312.56-1,412.40

Finding the Fourth Proportional to 4,875.12, 7,312.56 and 1,412.40

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Solution

The fourth proportional to 4,875.12, 7,312.56 and 1,412.40 is: 2,118.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,875.12 : 7,312.56 = 1,412.40 : x
  2. Step 2: Convert to fraction form
    4,875.12/7,312.56 = 1,412.40/x
  3. Step 3: Cross multiply
    4,875.12x = 7,312.56 × 1,412.40
  4. Step 4: Simplify right side
    4,875.12x = 10,328,259.74
  5. Step 5: Solve for x
    x = 10,328,259.74/4,875.12
  6. Step 6: Final answer
    x = 2,118.57

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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.