Home / 4,988.02-6,888.12-3,128.26

Finding the Fourth Proportional to 4,988.02, 6,888.12 and 3,128.26

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Solution

The fourth proportional to 4,988.02, 6,888.12 and 3,128.26 is: 4,319.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,988.02 : 6,888.12 = 3,128.26 : x
  2. Step 2: Convert to fraction form
    4,988.02/6,888.12 = 3,128.26/x
  3. Step 3: Cross multiply
    4,988.02x = 6,888.12 × 3,128.26
  4. Step 4: Simplify right side
    4,988.02x = 21,547,830.27
  5. Step 5: Solve for x
    x = 21,547,830.27/4,988.02
  6. Step 6: Final answer
    x = 4,319.92

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1.5x scale

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.